I like the app but everytime I wanna upvote or comment a post made through another instance the app won't let me unless I make an account for every instance. How do I get around this?
Make sure you don't have an empty lemmy.ml instance in your accounts settings in Liftoff. This happened to me with lemmy.world which was apparently there by default. If there is one then long press it and remove it.
For example I scroll my feed which is set to All. I then open a post for example on lemmy.ml and when I try to upvote it or comment it says I have to log in using lemmy.ml (or whatever instance it requires). This doesn't happen when I'm using Thunder or Jerboa
Hmm sorry I've tried my best to recreate it but seems to be working fine for me. Only thing I can think is you've somehow become logged out on the app itself? If not, hopefully someone else can help!