I have installed Lemmur client and tried to add my account at feddit.de. But Lemmur couldn't find that instance, nor any other instance I tried to connect with. What's wrong there? Do the instances run different APIs? If so, that would not be a helpful situation for the lemmy commuity to grow.
Thanks for the hint. But I am looking for a client on Linux, not Android. The Lemmur error occured on Linux...