# Support
**URL:** https://meta.discourse.org/c/support/6.md?page=430
[Latest](https://meta.discourse.org/latest.md) · [Categories](https://meta.discourse.org/categories.md) · [Tags](https://meta.discourse.org/tags.md)
**Page:** 431
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## [How to write LaTex in topic title](https://meta.discourse.org/t/how-to-write-latex-in-topic-title/177259)
**Author:** [@MrDavis97](https://meta.discourse.org/u/MrDavis97)\
**Replies:** 1\
**Last updated:** [January 17, 2022, 8:25pm UTC](https://meta.discourse.org/t/how-to-write-latex-in-topic-title/177259 "2022-01-17T20:25:32Z")
I have installed the LaTex plug-in, so I am able to write math in the body of the topics on my discourse by surrounding the math with dollar signs, like x^2. However, LaTex does not render in the title. Is there a way fo…
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## [Does CDN make sense for private forum using SSO?](https://meta.discourse.org/t/does-cdn-make-sense-for-private-forum-using-sso/215117)
**Author:** [@Himanshu\_Singh](https://meta.discourse.org/u/Himanshu_Singh)\
**Replies:** 2\
**Last updated:** [January 17, 2022, 8:16pm UTC](https://meta.discourse.org/t/does-cdn-make-sense-for-private-forum-using-sso/215117 "2022-01-17T20:16:53Z")
I have a private community with DO 2GB droplet. The speed is fine in the US (my base is SFO) but it is really bad in Asia. Takes 10+ second to load the community. I am using WordPress as the SSO partner and all my conte…
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## [Missing thumbnail for Twitter videos](https://meta.discourse.org/t/missing-thumbnail-for-twitter-videos/181734)
**Author:** [@Terrapop](https://meta.discourse.org/u/Terrapop)\
**Replies:** 2\
**Last updated:** [January 17, 2022, 8:11pm UTC](https://meta.discourse.org/t/missing-thumbnail-for-twitter-videos/181734 "2022-01-17T20:11:57Z")
In our community, many share Tweets containing a video. For most other videos from third-party sources, topic thumbnails are generated, but not for Video-Tweets. Thumbnails are available in the video object:
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## [Can't refresh gravatars after rebuilding the app](https://meta.discourse.org/t/cant-refresh-gravatars-after-rebuilding-the-app/214963)
**Author:** [@varun21](https://meta.discourse.org/u/varun21)\
**Replies:** 2\
**Last updated:** [January 17, 2022, 6:46pm UTC](https://meta.discourse.org/t/cant-refresh-gravatars-after-rebuilding-the-app/214963 "2022-01-17T18:46:14Z")
Running 2.8.0.beta11(8cfd791e0f) So everything was working fine. And then I did an app rebuild and now Gravatars are missing. Going into user-profile and then clicking refresh doesn’t do anything. However Gravatars work …
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## [Emails not sending properly](https://meta.discourse.org/t/emails-not-sending-properly/214943)
**Author:** [@Inobservatus](https://meta.discourse.org/u/Inobservatus)\
**Replies:** 4\
**Last updated:** [January 16, 2022, 5:24pm UTC](https://meta.discourse.org/t/emails-not-sending-properly/214943 "2022-01-16T17:24:38Z")
So I’ve got everything set up except my email, and it’s just returning this very basic error I can’t figure out how to fix. Rendered layouts/email\_template.html.erb (Duration: 0.2ms | Allocations: 30) Delivered mail d…
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## [Error: Bad Gateway 502 when trying to send invitations](https://meta.discourse.org/t/error-bad-gateway-502-when-trying-to-send-invitations/215086)
**Author:** [@Jolanda\_dW](https://meta.discourse.org/u/Jolanda_dW)\
**Replies:** 5\
**Last updated:** [January 17, 2022, 5:32pm UTC](https://meta.discourse.org/t/error-bad-gateway-502-when-trying-to-send-invitations/215086 "2022-01-17T17:32:51Z")
Hello, I’ve wanted to send Discourse-invitations to my team, but I just receive Error-Warnings. (Bad Gateway 502) I’ve already looked into the log-section of the forum, but there is no message shown up. I also read, th…
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## [What does the admin setting "category style" do?](https://meta.discourse.org/t/what-does-the-admin-setting-category-style-do/215102)
**Author:** [@varun21](https://meta.discourse.org/u/varun21)\
**Replies:** 2\
**Last updated:** [January 17, 2022, 4:10pm UTC](https://meta.discourse.org/t/what-does-the-admin-setting-category-style-do/215102 "2022-01-17T16:10:10Z")
What does the admin setting “category style” actually do?
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## [Avatar service somewhat broken](https://meta.discourse.org/t/avatar-service-somewhat-broken/215061)
**Author:** [@calmh](https://meta.discourse.org/u/calmh)\
**Replies:** 10\
**Last updated:** [January 17, 2022, 4:36pm UTC](https://meta.discourse.org/t/avatar-service-somewhat-broken/215061 "2022-01-17T16:36:08Z")
It seems like as of recently, users who sign up (edit: or maybe just have the “system avatar” but not cached in my browser) don’t get the typical colored-character system avatar, instead they just get a white / nothing p…
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## [Redirect non-www to www.mydomain.com](https://meta.discourse.org/t/redirect-non-www-to-www-mydomain-com/107037)
**Author:** [@foros](https://meta.discourse.org/u/foros)\
**Replies:** 3\
**Last updated:** [January 21, 2019, 9:30pm UTC](https://meta.discourse.org/t/redirect-non-www-to-www-mydomain-com/107037 "2019-01-21T21:30:47Z")
Hi, So, I have Ubuntu 18.04. I did not install any web server (as far as I know). All I want to do is to tell the web browser that when someone type my website like forosdeinmigracion.com, the URL box should show https:…
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## [Allow my application users to login to discourse](https://meta.discourse.org/t/allow-my-application-users-to-login-to-discourse/215059)
**Author:** [@Ranjith\_Reddy](https://meta.discourse.org/u/Ranjith_Reddy)\
**Replies:** 1\
**Last updated:** [January 17, 2022, 3:31pm UTC](https://meta.discourse.org/t/allow-my-application-users-to-login-to-discourse/215059 "2022-01-17T15:31:32Z")
Hi, I installed Discourse and launched discourse.mysite.com. Now we need to implement SSO kind of a thing. we are having lot of users who is using our application all the users signd up under my application www.mysite.c…
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## [Is it possible to create a custom group?](https://meta.discourse.org/t/is-it-possible-to-create-a-custom-group/215089)
**Author:** [@tenzan](https://meta.discourse.org/u/tenzan)\
**Replies:** 2\
**Last updated:** [January 17, 2022, 1:13pm UTC](https://meta.discourse.org/t/is-it-possible-to-create-a-custom-group/215089 "2022-01-17T13:13:41Z")
Is it possible to create custom groups? When creating a category, we’re restricted to use predefined groups.
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## [Disable media download in onebox](https://meta.discourse.org/t/disable-media-download-in-onebox/214777)
**Author:** [@martin9973](https://meta.discourse.org/u/martin9973)\
**Replies:** 17\
**Last updated:** [January 14, 2022, 12:37am UTC](https://meta.discourse.org/t/disable-media-download-in-onebox/214777 "2022-01-14T00:37:34Z")
hello, I saw there is an option to disable audio download: \ at onebox/lib/onebox/engine/audio\_onebox.rb at main · discour…
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## [Reviewing a topic before publishing](https://meta.discourse.org/t/reviewing-a-topic-before-publishing/214944)
**Author:** [@Anton\_Akhmerov](https://meta.discourse.org/u/Anton_Akhmerov)\
**Replies:** 5\
**Last updated:** [January 16, 2022, 7:26pm UTC](https://meta.discourse.org/t/reviewing-a-topic-before-publishing/214944 "2022-01-16T19:26:45Z")
I am running discourse for a relatively large course (200 students, 10-strong course team) and use it to publish all course announcements among other things. I am searching for best practices in preparing these announcem…
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## [Make groups invisible to the public](https://meta.discourse.org/t/make-groups-invisible-to-the-public/59574)
**Author:** [@axim](https://meta.discourse.org/u/axim)\
**Replies:** 24\
**Last updated:** [January 16, 2022, 4:22pm UTC](https://meta.discourse.org/t/make-groups-invisible-to-the-public/59574 "2022-01-16T16:22:01Z")
hello discourse community. here is axim from freiLand cultural center in Potsdam. We use discourse for our internal organisation and we are over 150 people using ist. It works fine. I have a question: We do not want t…
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## [Approving posts doesn't seem to bump topics in muted categories](https://meta.discourse.org/t/approving-posts-doesnt-seem-to-bump-topics-in-muted-categories/214977)
**Author:** [@Zeemah](https://meta.discourse.org/u/Zeemah)\
**Replies:** 2\
**Last updated:** [January 16, 2022, 2:47pm UTC](https://meta.discourse.org/t/approving-posts-doesnt-seem-to-bump-topics-in-muted-categories/214977 "2022-01-16T14:47:08Z")
Hello, Just noticed that when I approve a post it doesn’t seem to bump the topic afterward, is this intentional behaviour?
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## [Add New Users/ Change Post Timestamp](https://meta.discourse.org/t/add-new-users-change-post-timestamp/160081)
**Author:** [@MichelleBarnett](https://meta.discourse.org/u/MichelleBarnett)\
**Replies:** 7\
**Last updated:** [January 16, 2022, 9:54am UTC](https://meta.discourse.org/t/add-new-users-change-post-timestamp/160081 "2022-01-16T09:54:05Z")
Hi there, I have a couple questions. If I wanted to transfer new users from one site over to a different site, can this be done? Is it possible to change the date of a post? How do I disable a banner at the top of the…
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## [Download remote images to local silently failing?](https://meta.discourse.org/t/download-remote-images-to-local-silently-failing/105473)
**Author:** [@marcozambi](https://meta.discourse.org/u/marcozambi)\
**Replies:** 2\
**Last updated:** [January 2, 2019, 3:08pm UTC](https://meta.discourse.org/t/download-remote-images-to-local-silently-failing/105473 "2019-01-02T15:08:31Z")
Hi everybody! Back asking support about the download of remote images after this Let me outline my problem first. I have to make sure that images linked in about 1400 posts in my foru are correctly downloaded and impo…
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## [Noob install problem: WARNING: Port 443 of computer](https://meta.discourse.org/t/noob-install-problem-warning-port-443-of-computer/214261)
**Author:** [@GetReadyMan](https://meta.discourse.org/u/GetReadyMan)\
**Replies:** 9\
**Last updated:** [January 16, 2022, 1:54am UTC](https://meta.discourse.org/t/noob-install-problem-warning-port-443-of-computer/214261 "2022-01-16T01:54:15Z")
A Noob here trying to install Discourse on a Digital Ocean droplet and getting the Port 443 warning. Hostname for your Discourse? \[discourse.example.com\]: discourse.chaffeespeaks.com Checking your domain name . . . WAR…
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## [Skipping the configuration wizard after installation](https://meta.discourse.org/t/skipping-the-configuration-wizard-after-installation/59214)
**Author:** [@squidboylan](https://meta.discourse.org/u/squidboylan)\
**Replies:** 6\
**Last updated:** [January 21, 2019, 7:49am UTC](https://meta.discourse.org/t/skipping-the-configuration-wizard-after-installation/59214 "2019-01-21T07:49:04Z")
I’m writing an Ansible playbook to deploy discourse automatically. The problem is that I would like to automate the configuration that is done in the web browser after the installation. This would make it so that things …
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## [How to protect myself from bots crawling my Discourse instance?](https://meta.discourse.org/t/how-to-protect-myself-from-bots-crawling-my-discourse-instance/106962)
**Author:** [@PoojaPatel](https://meta.discourse.org/u/PoojaPatel)\
**Replies:** 4\
**Last updated:** [January 21, 2019, 5:38am UTC](https://meta.discourse.org/t/how-to-protect-myself-from-bots-crawling-my-discourse-instance/106962 "2019-01-21T05:38:10Z")
Currently I have faced issued in one of my wordpress site that someone has setup bot to crawl my whole site. Q: How I know that bot crawl my site? Ans: I have seen +500% clicks on my affiliate dashboard from my website…
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## [Using Discourse as a newsletter](https://meta.discourse.org/t/using-discourse-as-a-newsletter/141308)
**Author:** [@tornasolada](https://meta.discourse.org/u/tornasolada)\
**Replies:** 3\
**Last updated:** [January 15, 2022, 3:50pm UTC](https://meta.discourse.org/t/using-discourse-as-a-newsletter/141308 "2022-01-15T15:50:05Z")
The objective is to link users from an external website to Discourse signup form in order to subscribe to a specific group that will be used as a newsletter. However in its current form Discourse signup form requires the…
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## [Postfix setup for remote discourse configuration?](https://meta.discourse.org/t/postfix-setup-for-remote-discourse-configuration/214957)
**Author:** [@f1r4s](https://meta.discourse.org/u/f1r4s)\
**Replies:** 0\
**Last updated:** [January 15, 2022, 3:00pm UTC](https://meta.discourse.org/t/postfix-setup-for-remote-discourse-configuration/214957 "2022-01-15T15:00:45Z")
Hello, I have setup Postfix with mailgun on seperated VPS for sending mails using this topic; after finish i still cannot find how or what information i should update the app.yml file for the setting to connect there…
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## [Discourse stopped working with 404 errors](https://meta.discourse.org/t/discourse-stopped-working-with-404-errors/106997)
**Author:** [@Bruce\_Bates](https://meta.discourse.org/u/Bruce_Bates)\
**Replies:** 5\
**Last updated:** [January 21, 2019, 4:11am UTC](https://meta.discourse.org/t/discourse-stopped-working-with-404-errors/106997 "2019-01-21T04:11:10Z")
Discourse was working great for a few months, then I wake up to find the page won’t load. Not sure if something changed in my system’s config or what. I tried sudo ./launcher rebuild app that didn’t seem to help. Then I …
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## [Migration via snapshot upload](https://meta.discourse.org/t/migration-via-snapshot-upload/214917)
**Author:** [@schwa](https://meta.discourse.org/u/schwa)\
**Replies:** 3\
**Last updated:** [January 15, 2022, 2:08am UTC](https://meta.discourse.org/t/migration-via-snapshot-upload/214917 "2022-01-15T02:08:44Z")
Having fought successfully with the vbulletin migration script, and watching the migration churn away for 36 hours now with a couple million posts yet to go… If there is no existing Discourse content or data relationshi…
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## [After upgrade, docker: local\_discourse/app is not a valid mac address](https://meta.discourse.org/t/after-upgrade-docker-local-discourse-app-is-not-a-valid-mac-address/214905)
**Author:** [@Féréol](https://meta.discourse.org/u/F%C3%A9r%C3%A9ol)\
**Replies:** 8\
**Last updated:** [January 14, 2022, 9:39pm UTC](https://meta.discourse.org/t/after-upgrade-docker-local-discourse-app-is-not-a-valid-mac-address/214905 "2022-01-14T21:39:55Z")
After an upgrade by: git pull ./launcher rebuild app The service is not starting even by a ./launcher start app I am getting an error related to mac-address and there is no mac address on the command line: # ./launc…
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## [Column bookmarks.topic\_id does not exist](https://meta.discourse.org/t/column-bookmarks-topic-id-does-not-exist/214128)
**Author:** [@Nacho\_Caballero](https://meta.discourse.org/u/Nacho_Caballero)\
**Replies:** 5\
**Last updated:** [January 14, 2022, 9:59pm UTC](https://meta.discourse.org/t/column-bookmarks-topic-id-does-not-exist/214128 "2022-01-14T21:59:58Z")
I’m getting “The software powering this discussion forum encountered an unexpected problem” on topics with bookmarks. Reloading each topic after the error makes it go away. I’m on the latest build: 2.8.0.beta10 (6b6c…
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## [Can I use some of the help content from the meta site](https://meta.discourse.org/t/can-i-use-some-of-the-help-content-from-the-meta-site/211998)
**Author:** [@RichWilkie](https://meta.discourse.org/u/RichWilkie)\
**Replies:** 5\
**Last updated:** [January 14, 2022, 9:49pm UTC](https://meta.discourse.org/t/can-i-use-some-of-the-help-content-from-the-meta-site/211998 "2022-01-14T21:49:07Z")
Hi all, I’m starting a new community and want to use some of the “how to” docs and help content that is available on the discourse site to pre-populate some of the things that people will definitely ask about. I’m think…
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## [Latest topics on homepage with only members to read in detail?](https://meta.discourse.org/t/latest-topics-on-homepage-with-only-members-to-read-in-detail/214780)
**Author:** [@Im\_Caffeine](https://meta.discourse.org/u/Im_Caffeine)\
**Replies:** 4\
**Last updated:** [January 14, 2022, 9:18pm UTC](https://meta.discourse.org/t/latest-topics-on-homepage-with-only-members-to-read-in-detail/214780 "2022-01-14T21:18:04Z")
We have a forum that’s currently set up as member-only, and therefore, the homepage is a simple log in page. Is it possible to make the home page like the Discourse home page, but only members can read the content of th…
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## [Insert Video stopped working?](https://meta.discourse.org/t/insert-video-stopped-working/283546)
**Author:** [@PaulinaMX](https://meta.discourse.org/u/PaulinaMX)\
**Replies:** 8\
**Last updated:** [January 14, 2022, 8:18pm UTC](https://meta.discourse.org/t/insert-video-stopped-working/283546 "2022-01-14T20:18:50Z")
Hi, I have used this component for a long time and it has always worked great, but since yesterday it no longer allows me to upload videos on my forum.
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## [Show all users in a PM](https://meta.discourse.org/t/show-all-users-in-a-pm/214817)
**Author:** [@JimPas](https://meta.discourse.org/u/JimPas)\
**Replies:** 4\
**Last updated:** [January 14, 2022, 7:42pm UTC](https://meta.discourse.org/t/show-all-users-in-a-pm/214817 "2022-01-14T19:42:28Z")
On another forum (Discourse of course) a question came up as to whether the number of users’ avatars shown in the PM can be increased from the default of 10 users. As it is now, it shows the avatars of the first 10 and t…
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