It has already been manually approved, but on the create page it hasn't updatedOnce you submit a new cover, it needs to be manually approved again.
Just wait for now, it should be approved in 24h or less.
clear your cacheIf you look at it in the series finder, it's still the old cover. Once you click on it, it shows the updated one, but then that destroys the whole purpose of the new cover.
ask Mr./Ms. Googlehow you do that
If you look at it in the series finder, it's still the old cover. Once you click on it, it shows the updated one, but then that destroys the whole purpose of the new cover.