Policy violation You're not allowed to onboard this app because a previous version didn't comply with the Audience Network Policy. If you fixed the policy issue causing this restriction, you can request a review of the initial app using the link found in the initial disapproval.

If you believe that you've received this message in error, you can contact our publisher support team using the publisher support portal.

Case ID 7633797013402434

And they request me to ask a question here. I hope someone could help me about this. Thanks!