Had to split post (because it’s loo long?), see comments.

url result status
https://lemmy.world/c/ultralight@lemmy.world shows up, up-to-date 🟢
https://sh.itjust.works/c/ultralight@lemmy.world shows up but all votes and comments missing 🟡
https://lemmy.one/c/ultralight@lemmy.world shows up, some votes missing 🟡
https://midwest.social/c/ultralight@lemmy.world couldnt_find_community 🔴
https://feddit.nl/c/ultralight@lemmy.world couldnt_find_community 🔴
https://lemmy.nz/c/ultralight@lemmy.world couldnt_find_community 🔴
https://sopuli.xyz/c/ultralight@lemmy.world couldnt_find_community 🔴
https://mander.xyz/c/ultralight@lemmy.world shows up, some votes missing 🟡
https://lemmy.dbzer0.com/c/ultralight@lemmy.world couldnt_find_community 🔴
https://lemm.ee/c/ultralight@lemmy.world shows up, some votes missing 🟡
https://vlemmy.net/c/ultralight@lemmy.world show up, all posts missing 🟡
https://feddit.de/c/ultralight@lemmy.world couldnt_find_community 🔴
https://lemmy.ca/c/ultralight@lemmy.world shows up, some votes missing 🟡
  • terribleplan@lemmy.nrd.liEnglish
    1·
    1 year ago

    Users on those instances need to search for your community then subscribe, only will then new posts/votes/comments show up. Federation is opt-in, not automatic.

    • jrbaconcheese@vlemmy.netEnglish
      1·
      1 year ago

      This is correct; until someone on those remote instances searches (or maybe subscribes?) then the c/ultralight won’t be federated to those remote instances. You should use a larger community as your test case, if you are trying to verify federation, or take is a sign that your (very niche?) ultralight community just hasn’t got many subscribers yet.