Facebook created an Audience Network for my game. Same name of game with "- Audience Network" appended to it.
Is this necessary to show ads?
If so, does this need to have Instant Games enabled?
Or do you just leave it alone?
in FB business manager you need to have your app registered as a deta source. Data Sources -> Apps
In the Properties you need to have a property registered, where your app is an asigned asset. Data sources->Properties
Then in monetization manager you set up your property with Instant ads, and the ID you get there is the one you fill in into Construct events.
you can look into your app, under ADvanced and verify thet the business manager is linked there as well.
(this is how I did it, but you can maybe do it in many different ways! I can also say that their layout/setup changes very often, so evrytime you look into this manager the setup is different )