Though it's much rarer than the rumor mill would have you believe, cheating is an unfortunate reality of online gaming. If you believe you have witnessed a player using a cheat, make a note of that player's user ID number and nickname. If possible, grab screenshots (here's how) or shoot video. (The easiest way to show us video is by using Screencast-O-Matic and uploading the video to YouTube publicly. We're unable to download videos due to our security policy, so you'll need to provide us with a video link.) Then report that jerk for trying to ruin the game for everyone!
However, do not report potential cheaters to KIXEYE customer support. KIXEYE customer support does not investigate cheating reports; the Fair Play team does that. Please submit all cheat reports via the “Report a Player” page found at https://www.kixeye.com/support/web/report?game= so the Fair Play team can investigate. (Keep in mind that for security purposes, you will not be informed of the outcome of their investigation.)