> I can't even figure out how to use it from my mobile device without installing an app.
I believe that's deliberate. The mobile web version of Facebook used to support personal messaging. In 2016 they removed it in an effort to push people onto the app.
> Your Page's Inbox is not currently available in the
> Facebook app or mobile web browsers. You can access
> your messages through a desktop browser, or by
> downloading Facebook Business Suite or Messenger
> from the app store.
In one comment on HN[0], a user suggested:
> You may need to access the page by clicking a link
> from another mbasic page in order to have some kind
> of checksum in the URL.
Another user replied that they were able to get access to the page with that method[1], but I haven't been able to replicate it.
Messaging was still available for a long time through mbasic.facebook.com up until very recently.
They removed that feature at the time their last big messenger outage happened.
messenger.com still works on Android Firefox as long as you switch to desktop mode.
Not sure for how long though, as it looks as if they are constantly sabotaging their platform. ..and it shows: Facebook Messenger feels far less relevant than maybe ten years ago.
In my German peer group everyone now uses either WhatsApp or Signal for private and Teams+email for work related communication.