After many tries, I'm not getting how we can use the Facebook API to create a simple Ad based on a Post (and it's creative) like it is possible in the Business Manager.
For example, my last attempt failed due to a problem with Instagram:
Facebook API: Instagram Account Is Missing
If there is anybody that has been able to create a basic Ad (within a given or new AdSet) based on a Post, please help me. I've seen many questons like this (especially regarding the Instagram problem) and now I'd like to have a working solution.
What exact requests have to be done or isn't it possible at all?