If I say my experience in one sentence – “StartApp simply took away my money($285) at the time of my payout”.
( Using the word ‘Cheat’ in this context is because it is the most appropriate word according to my experience which can best describe these type of situations )
I was first afraid to try some different ad network other than AdMob since I heard there are several cheaters around. Still, I was excited to try some other advertising and monetization network. Meanwhile googling for some android app monetization ad networks, StartApp came into my front, But later only at the time of payout I understood I was cheated by them and I lost what my app earned from their ads. Here is my bad life experience with StartApp with email screenshot proofs from their so-called support team.