Cheating?!

Dear friends,

I just received this message:

"this is a friendly reminder that we actively monitor games for cheating. You are receiving this automated message because your recent play has been flagged as potentially suspicious by our cheat-detection system."

"...."

I wonder to this message because I really can't understand in what way could I cheated?! I wish that the reminder said what I did wrong. I can only suspect that my oponent unjustly reported me.

King regards

I saw your games and I think it is an obvious mistake. 

Mistake by whom: cheat detection system or opponent?

I don't know

Thank you guys.

Suppose this is one advantage my shocking chess skills give me, I don't get accused of cheating.