The automated messages is a forum default, I’d disable it through the settings. The forum rarely has official statements but for the weekly dev threads. If you want official statements you need to write the helpdesk.
You’re not alone in the AppL struggle, but there seems to be a higher failure rate with FP5 users than other devices.
The threads under the app-lounge tag with high “Replies” count are due to authentication and installation issues for recent reports of others.
Wrote a bit more on AppL fixes here. If you still got issues in v3.2 you need to wait vor v3.3. Getting apks either via Aurora store or an Apk mirror. If you already installed the apk and it’s only about updates, any apk mirror is safe.