You should be able to now. It's just that no one on this instance had subscribed to it yet, so the instance didn't know the community existed. All sorted now though!
Still doesn’t work. Perhaps it’s an issue on my end. Both the voyager and default frontends don’t let me. But I imagine issue is not linked to blahai if it worked for you, thank you for checking anyways. I’ll try to figure it out :).