Seems they are beeing more then fair to me hey they could have done an ARS on you and taken down every niche site you promote and give you a week to lose the links or change them after years of working with them
Gamacash has always paid me with no problems been with them since 1997 and never had a problem, they are paying you your back traffic and notifing you about any traffic you send in the future will be paid per signup which if your traffic is not converting I would say is also very fair and it is in there TOS
just my
