How to get approve account from mopub?

Hi all

i created 1 mopub account from 1 month ago.
But it still hasn’t been approved

Me: i send email to policy mopub ask why?
Mopub: and then they reply that “more violation as outline in mopub”
Me: And i ask they can show me what missing or wrong in my account infomation
Mopub: They said they unable to disclose the specific policy.

Who can send me what should i do? :frowning:
Thanks