I can’t seem to search for my community on my own instance: https://feddit.rocks/search?q=!piped%40feddit.rocks&type=All&listingType=All&page=1&sort=TopAll
Other instances can’t seem to find my community:
https://lemmy.ml/c/piped@feddit.rocks
https://lemmy.world/c/piped@feddit.rocks
https://beehaw.org/c/piped@feddit.rocks
https://feddit.de/c/piped@feddit.rocks
It seems to work fine on https://programming.dev/c/piped@feddit.rocks tho!
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.