Need expertise suggestion please help.

Actually we have digital products selling website and need help with a gateway which is liberal ( not much strict ), I recently got a gateway by 2chekout and cracked each day sale $ 4000 for 3 days was just a tryout but never knew their fraud detection also happens and money stuck with them, please help me if you guys know any gateway in which no limit of making sale each day and no limit monthly. if the gateway is liberal and dont put a bar on how much we make sale, if any one truly helps on this will be awesome.