I have already sent you a PM explaining this. You do not have to be cheating to get a ban, our system checks your IP for VPNs, proxy, commercial networks, academic networks...etc..etc. The service we use also checks to see if your IP has been blacklisted. Your IP is blacklisted (not by us), but I have no idea why. A lot of bad traffic come from these IPs on the blacklist, such as brute force attacks, ddos attacks, and fraud because the system is controlled by malicious agents. The service we use checks numerous databases and verifies if your IP is blacklisted.