why are sites no longer doing manual credits?????

I was just wondering why a lot of sites are no longer doing manual credits. I have a lot of issues getting my credits sometimes, why I do not know. I do everything required before I do each offer, and at times I do not receive credit. I do not think it is fair that if we do the offer, and have the email to prove it, why we can no longer get manual crediting. I do not think we should have to do another offer, to make up for the one that did not credit. Is there a reason why as to some of the sites are no longer doing the manual credits? Thanks!!!!!!!!!!!!!!!!!

Yes, it's been thoroughly discussed in several threads. Use the search function, that should help find them.

Simple, fraud.