It looks like there are multiple post types on Piefed (link, image, poll, text, etc.), and the Interstellar client throws an error for me when I try to create a text post on it. It says that the link cannot be null, as well as the alt text (neither of which are relevant for a text post).

Has anybody experienced this issue and know how to resolve it? The app definitely supports Piefed from what I can tell, and I can do everything else (receive notifications, read posts, comment, updoot, join and leave communities, etc.)

If it helps, I'm running the Android client installed via F-Droid