The system is 100% deep learning, but most our our spend going to app lovin was in a new product that isn’t use deep learning yet unfortunately. You’re correct though :) we bid to roas/cpa and the affected campaigns were bidding to cpc!
That makes sense. I wouldn't call that ad fraud. That's the ML system optimizing for what you've said you want. If you bid for cpc you're going to get a lot of cheap clicks, but they're going to be nearly worthless. That would be the case on any large ad network, especially since mediation is so mature.
