The suspicious activity they're referring to doesn't necessarily mean illegal. It could be gambling for example. A lot of exchanges might suspend your account for that reason.
So it is not good to have funds coming from an gambling site? I wanted to know how these exchanges such as this latoken can marked one account with transactions as illegal. How did they found out since blockchain is really broad. Unless their using the info of him and check out as wanted somewhere. But is this legal? That's why KYC is dangerous who knows what are they doing with our info. Sorry to hear with OP's case.