Why my forum not pop-up "Add to Home screen"(PWA) automatically?

[pfaffman (Jay Pfaffman)]

Setting up HTTPS support with Let's Encrypt

Note: ./discourse-setup will enable Let’s Encrypt

It tries to tell you not to follow the guide because you’ll likely do it wrong and to instead do it the easy way.

And now it says

Setting up HTTPS support with Let's Encrypt

Note: ./discourse-setup will enable Let’s Encrypt. And as of March 2017, you can run it again, and press return a few times and enter your email address ; the script will include the required templates and insert your email address as required. Unless you are an expert sysadmin and know a reason not to do that, you should run discourse-setup rather than read any further. (If you installed Discourse a long time ago , you might still have to edit app.yml by hand.)