You should contact eBay customer support for an in-depth report on the status of your account. Please follow these steps:
- Log in to My eBay -> Seller Dashboard
- Check the status of your account - eBay will have provided a report for you on defects, open cases and much more.
- Contact eBay customer support. They will guide you on how to improve the status of your account.
Please check this eBay article to acquaint yourself with how eBay rates accounts.