Edit2: Solved per wjs018’s comment

Specifically !12ozmouse@adultswim.fan. I can tell the instance is federated because !adultswim@adultswim.fan shows up.

On Lemmy I’d run into this issue, and usually could use the community search and try searching in a few different formats to get it to show up eventually, but I wasn’t able to get that to work here. I tried searching the link above, as well as the link without the !, the display name, and the full URL (https://adultswim.fan/c/12ozmouse), but these didn’t work.

Is there any trick to doing this?

Edit: I was able to resolve my issue by making this post, because the link that appeared let me join. But I’d still like to know a general solution that doesn’t involve finding or making a post with the link (the post preview didn’t turn it into a link so I had to actually make the post for it to work).