How do I connect my account
On the marketing page click connect
This will open a window asking for your Ads account ID
Click connect and follow the authentication process
You will receive confirmation whether the connection was successful or not
What is my Ads account ID?
Your Ads account ID is the unique number that is used to identify your Ads account and associated campaigns. It is a 15 digits long.
When you log in please ensure that the Facebook Account you use to authenticate has access to the appropriate Account ID
Where do I find my Ads account ID
Sign in to your Business Manager Account
In the left hand navigation click on Ad Account Settings
You Ad account ID can be found at the top of the page
For more information you can checkout the guidance here but they do like to make it complicated!