❌ Problem: You have no ad account on the integration page
If you don't see your ad account in the list of ad accounts associated with your Facebook profile, here is one possible reason:
Your Facebook profile does not have the required permissions. You must be an administrator of your Business Manager as well as the ad account you want to access.
Go to your Business Manager in the Accounts > Ad Accounts section. Click on the appropriate person and grant them admin access: