The release issue

The artist name of the release and the artist name that you have on your cover art doesn't match. Please make sure they match.

It might sound picky but the artist name on the cover and the artist name of the release has to match exactly. No variation or slight tweak. 

Take the example below:

How can I fix the issue?

Easy. Either amend the artist name on the cover art or as an alternative change the artist name. As long as it matches you'll be good to go.