are some communities hidden/inaccessible for non-lemmy.ca accounts?

hey,

for some reason i can't see the vancouver community from my beehaw account (eg https://beehaw.org/c/[email protected] returns a 404 and it doesn't show up in https://beehaw.org/communities), but https://lemmy.ca/c/vancouver works just fine, any idea why that would be?

thanks!