Conquer Club

I might be wrong, but no one would get on the site and decide his unsername will be 'callmecook" unless he's already had an account on the site and he knows how it works
CallMeCook

obviously having a "most improved" medal on his first month on the site doesn't help to remove my doubts that he's been cheating

He's already been cleared.

well that surprises me! what a strange choice of username when you're fresh on the site. there are still plenty of ways to make a multi account without getting caught... the only way multihunters could catch a multi that I can think of is IP, cache and cookies in the browsers. If you move houses or use a vpn and you use let's say your wife's computer i don't see how ou could get caught for example? but i'm no expert.

Cook is a common surname and also a profession. That felt less suspicious than his games, to me. I asked for a check privately though and he got through. They have more methods than you listed I believe.

Cleared (for now).