1. Inside Cometly, navigate to the 'Integrations' page
2. Next to Facebook Ad Account' you should see a grey button that says 'Connected' with a 3-dot navigation icon next to it, click the icon:
3. Click "Resync Facebook"
4. You should be able to connect your new Facebook ad accounts.
NOTE: Only Facebook ad accounts that you have ACCESS to will show up. You can not add a Facebook ad account into Cometly if you do not have access to the said ad account.