I think cheeseburger.social/c/<community>@vlemmy.com would just be a cached copy in this case. Communities founded on dead instances don’t get updated across instances anymore (maybe I am wrong tho)

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: !fediverse@lemmy.world