As stupid as it may sound, I admit there are things about lemmy that I don’t understand. One of those things is the separation to .ml, .world and so on. I just came across a post on lemmy.world but it reads I haven’t logged in. So: do I have to create a new account in order to subscribe/comment on .world or can I use my current account from .ml?
If you’re using Lemmy in a browser, opening a link will take you to the link’s instance, like opening a new website. This will mean that you need to log in to post etc.
If you use Lemmy through an app, that should handle the links and make it essentially work like one big website. You can open links from any part of Lemmy and be able to post and comment from your existing account.
The only issue may be the fact that you’re on .ml. Some instances have blocked .ml and a few other instances because of what are basically political differences. That will restrict where you can post, and could be part of your issue.