Thank you for reaching out to us.
Kindly note that we can only provide assistance to technical concerns with the AdMob SDK in this forum. For account-related concerns, you may want to reach out to the AdMob Help Center for further assistance. The product specialists there should be able to provide better insights on this.
With that said, you may check out this article on invalid traffic for further details on this. There is also a form there, as well as this appeal form, that may help you in clearing this policy violation.
Ziv Yves Sanchez
Mobile Ads SDK Team