Have you actually read any of the posts in the forum?
I'm having problems too.. Long delays then they keep rejecting my ID without explanation even though it follows all their rules.
I was a big fan of this site as a buyer, but am seriously disappointed in how unprofessional it is in accepting sellers.
The discussion thread about seller's verification:
My seller's account not approvedhttps://www.mql5.com/en/forum/280472