Aron
Are you referring to your Ad Manager setup?
Ad Manager differs from Adsense in that Adsense is an ad network, whereas Ad Manager combines Google's large ad auctionplace - Ad Exchange, and the old Double Click for Publishers platform, which enables publishers to sell, schedule, deliver, and manage their ad inventory.
If your site/domain was not approved for Ad Manager you should be able to see the reason in your Ad Manager account or in your Ezoic dashboard (Monetization> GOOGLE AD MANAGER MULTIPLE CUSTOMER MANAGEMENT> you will then see the reason given by Google regarding their review. Check and resolve the issue they mentioned and then you can click the Reapply domain button for Google to review your Domain again for Ad Manager )