Clixsense account suspended

After I earned about $5.7 (about 3-4 months to earn that amount), today, ClixSense suddenly suspended my account, they told me that I have violate their TOS..... If I violate their TOS, why don't they suspended my account in the EARLY time to not waste my time for clicking their ADS? And why don't they send a WARNING if I make a mistake? I think they gonna be scam. Don't waste your time here, maybe someday your account will get SUSPENDED. If you have any opinions, feel free to shares. Good Luck! Don't make any mistake or YOUR ACCOUNT WILL GET BANNED