There are a few things you can do to enable Facebook Ad Manager after it has been restricted from advertising.

1. Check your account status. The first step is to check your account status to see why it was restricted in the first place. You can do this by going to Ads Manager > Account Quality > Account status overview. This will show you a list of any restrictions that have been placed on your account, as well as any actions you need to take to resolve them.
2. Complete any required actions. If there are any required actions listed in your account status, you’ll need to complete them before you can start advertising again. This could include things like enabling two-factor authentication, verifying your business information, or resolving any policy violations.
3. Contact Facebook support. If you’ve completed all of the required actions and your account is still restricted, you can contact Facebook support for help. They’ll be able to investigate the issue and take steps to resolve it.

Here are the steps on how to enable Facebook Ad Manager after restriction from advertising:

1. Go to Ads Manager.
2. Click Account Quality in the left menu.
3. Click Account status overview.
4. If your account is restricted, you’ll see a message that says “Your account is restricted from advertising.”
5. Click Learn more to see why your account was restricted.
6. If you understand why your account was restricted, you can take the necessary steps to resolve the issue.
7. Once you’ve resolved the issue, your account will be automatically enabled for advertising.
8. If you’re still having trouble, you can contact Facebook support for help.

Here are some of the reasons why your Facebook ad account might be restricted:

• You violated Facebook’s advertising policies.
• Your account was hacked or compromised.
• You didn’t meet Facebook’s two-factor authentication requirements.
• You’re a new advertiser and haven’t yet met Facebook’s requirements for new advertisers.