re: the pending subscribe, this is a known issue: https://github.com/LemmyNet/lemmy/issues/2685

You can click and subscribe again to remove “pending”.

This is a known issue: https://github.com/LemmyNet/lemmy/issues/2693

Should be fixed up by the next release

great update, lots of good quality of life features. rip the c/main community, may you live in peace

I haven’t tested it enough, but that does seem to be the case. For both users and communities you can block/unblock on their page or in your user settings page.