Is anyone else having issues with subscribing? I've tried on a number of different communities on different instances including the one I use and it was subscribe and then immediately unsubscribe.
For me, I noticed that i have to logout and then log back in for my subscription list to refresh and reflect a new subscription. This is the case both on mobile and with Connect. This is on Lemmy.ca, with both a local community and another one from another instance. So it doesn't seem Connect specific. Not sure if you're having a similar problem or another entire since you mentioned being immediately unsubscribed.
I think you might be right, I left and came back and the ones I was having issues with appearing in my subscriptions are now there. Not sure what happened but it's working ok now.