This might be a dumb question, but... you are using the app under your lemm.ee account right? If you're signed in on multiple accounts, the app doesn't always make it easy to tell which one you're viewing with (and I noticed that you're posting this with a lemmy.world account)
If that isn't it then it sounds like a problem with Eternity and maybe the devs can help you
If I were you I'd try logging into the mobile site so you can see whether it's an issue with your actual account / the server or just when viewed through that specific app.
Hey, just saw someone else discussing this issue in Eternity (but another Lemmy server) and apparently the fix is to remove and re-add your account in the app.
Figured I'd report back in, in case you're still having trouble but also in case anyone stumbles across this thread in future 👍