@julian@activitypub.space Unfortunately only some functionality seems to exist, but I'm still having issues subscribing to group actors in categories- both Lemmy and nodeBB.
Using technical-discussion@activitypub.space as an example, I'm to add https://activitypub.space/category/5 as shown in my screenshot?
And if it is a Lemmy community, I would add https://lemmy.ml/c/fediverse (for example)?
I'm writing this message to you just fine from my NodeBB instance however, and I see it's going over to activitypub.space just fine. Stumped.