Hello and welcome @Johnny_We
A quick look in the browser console is pointing to a header-toggle-button theme component:
Uncaught (in promise) Error: Could not find module `ember-cli-htmlbars` imported from `discourse/theme-7/widgets/header-toggle-button`
c loader.js:247
c loader.js:258
findDeps loader.js:168
c loader.js:262
requireModule loader.js:24
s auto-load-modules.js:18
s auto-load-modules.js:12
initialize auto-load-modules.js:40
initialize app.js:49
runInstanceInitializers Ember
each dag-map.js:231
walk dag-map.js:145
each dag-map.js:75
topsort dag-map.js:83
Ember 4
invoke backburner.js:351
flush backburner.js:241
flush backburner.js:447
_end backburner.js:999
_boundAutorunEnd backburner.js:648
promise callback*n/< backburner.js:28
flush Ember
_scheduleAutorun backburner.js:1218
_ensureInstance backburner.js:1206
schedule backburner.js:805
Ember 6
<anonymous> start-app.js:4
<anonymous> discourse-boot.js:50
<anonymous> discourse-boot.js:51
loader.js:247
If you can use safe mode to login and either update it or disable it from your /admin/customize/themes
page that should help.
I notice that yours is a login-only site. If you can’t login in the normal way due to the infinite loading you can use the /u/admin-login
and also enable safe mode at the same time.
Separately, I think you should be able to downgrade your mailgun plan to the flex version if you try and cancel the paid one. I think it still exists, but they’ve hidden it a bit. There’s some more info in this topic: