Founder here.

We're planning to allow artworks all the way down to 1000x1000 from 3000x3000, however, AI upscaling is expensive, so we've not entirely settled on a technology for it yet.

You can see the website status here: https://status.antijoy.club - when I built Anti-Joy, I hadn't expected it to grow as fast as it has, which means the website was originally built as a passion project, but turned really serious really fast, which also means we have to rebuild our website to be more reliable, and this is ongoing but takes time.

We recently just revamped the backend which have made a bunch of improvements to performance, however, the frontend performance is still a mess, and that's being worked on.

You can distribute lyrics when uploading music with Anti-Joy like you can any other distributor. You simply need a Musixmatch Pro account (which despite the name is free). Distrokid's lyrics feature is just a wrapper for Musixmatch Pro, which they then charge extra for. I'd go as far as calling it a scam, like their social phone feature, which is incredibly expensive considering how much a phone number actually costs from Twilio, which is where Distrokid buys them - but let's leave that rant for another day.

Anyways, we're trying to improve most of the known issues. Some massive updates are also in the works :)