Here are some quick and valuable resources to fix your Facebook Business Manager issues;

How to get your Facebook Business Manager verified (especially important for IOS14 changes) – LinkHow to request a review of your restricted ad account – linkHow to fix disabled payments and ad manager – moreHow to safe guard your Business Manager and Personal Profile Turn on 2 factor authenticationVerify your identityMake sure phone number is up todateAdd backup people to your profileVerify your business managerAdd 2FA for each person