I am working with an advertising agency and they said something about an app-ads.txt file that I found in Monetization but I have no URL for that type of file. It just says Rootdomain.
they need to provide you with that file - and usually, they do - so they will provide you with the URL you need to set up in the Monetization section.
I started a topic earlier asking about video ads. Can you please go to that topic and see if you can shed some light for me to start running video ads? Apparently you two know something many others don’t.
