Make sure to select a language (e.g. English), I've seen it do this when no language is selected.

Hey, it sounds like the app you're trying to use expects the server to be running Lemmy 0.18.0, which is the latest version.

I'm sure lemmy.world will upgrade in a couple of days, I believe they are waiting for 0.18.1 to release. In the meantime, you can try making an account on another instance that is already running 0.18.0 and using that to browse/interact with the Fediverse through the app.

You're welcome to create one on lemdit.com if you wish.

I'm glad you found it useful, thanks for your comment!

Yes you will need to create an account on the other instance. Many (I would say most?) instances allow open account creation, you may have just been unlucky with the one you looked at.

Added https://sub.rehab/ to the list.