Some complexity with this. First off, you have to be logged in. I also used the full URL convention when searching, putting in "https://feddit.rocks/c/piped" as what to search for. Now lemmy.world link you shared works.

EDIT I used the other convetnion, "[email protected]" on Beehaw and was able to get discover and first subscriber/join too.

[–] [email protected] 4 points 1 year ago (1 children)

Oh, I see! I overlooked that you needed an account on the instance to be able to resolve remote communities.

[–] [email protected] 3 points 1 year ago

It does a real-time connection with a 10-second timeout, so I think they choose to restrict it to only logged-in users. The connection was failing pretty frequently in the version 0.17.4 era, but 0.18.2 is way more solid with PostgreSQL not being overloaded.

[–] [email protected] 0 points 1 year ago

Hi there! Looks like you linked to a Lemmy community using an URL instead of its name, which doesn't work well for people on different instances. Try fixing it like this: [email protected]