If you looking for Get Instant Approval Trusted CPA Networks which is trusted , you may try this list
Instant Approval CPA Networks
Although There is no instant approval in any of the legitimate cpa network.As review from many forums and blogs MaxCPA,Adworkmediacame highly recommended as an instant approval CPA network.Just you need verify Email and Phone.You do not get any Instant approval from Peerfly and maxbounty. In Peerfly you have to refer any other company where you earned at least $500. Then send details of Affiliate Manager contact info to peerfly affiliate manager. And with Maxbounty you have to call them for an interview.Your affiliate manager will accept or reject basis on you interview.