See above message
Perhaps you have gone over the 100.
Both relists and revisions count towards your total
Sounds as though you may have hit the branded items limit; if you had simply exceeded the 100 x 99p starts per month then you'd just have seen a listing fee pop up on the screen.
eBay don't disclose their criteria for imposing or lifting restrictions/limits nor do they disclose which brands are on the restricted list.
I bid, I win, I pay - you deliver