This 
: may have happened due to your mistake. So no one here can help you in this case. Talk with Admob and see if your problem solves
This , I believe is not any problem 
You can get one, provided, after getting, don’t break any rules or else then it will create a problem.
I wonder If they would lift the ban.
You already got the answer for this here 
Hope I was able to answer your problems pretty well 