I'm trying to subscribe to some of the communities linked here.
When I click on any of them, there is no working subscribe button. There is a 'subscribe' text, but it's not clickable. (see attached screenshot) The button does show up on local communities, but not on federated ones.
Tested on Safari iPadOS 16.5.1 and macOS 13.4.1
Even just clicking the link above the subscribe button did it for me.
I hadn't even thought about that, nice!