The pending subscription is a known thing. If you retract the subscription and then redo it, it should be good. If not, wait a bit and retry. You may have to reload the page so see the button change to "Subscribed".
Not sure about the other though. In my experience, purging and refetching a community will always fix it... :/
I'll pass this post to the admin Matrix chat (which you should join), since it's important to have this kind of info publicly and readily available as well.