I have also encountered this issue after logging into the game after 2 months of inactivity, I will let you all know (if i remember) What responses i get from support. I also do have a razer device with razer drivers installed.
Edit: My account was Hacked and i assume that the person who played on it was cheating despite them having a horrible k/d
Last update: Account had the ban lifted as it was indeed compromised! A W for riot support.