I was banned with no warning

I enjoy val, i really do, so the last time i played was i believe 2 days ago, and everything was fine. My friend wanted to get off and play league after one game, so i said sure, we got on league played for like 6 hours then i moved on with my life, but today, when i got on valorant today. i was met with a "connection error" saying i was banned and that my device is restricted access, with no other info, and told me that a review detected my actions of one of my accounts playing on my own device violated section 7 of user rules. At the least id like to know what i did, and if this is a temporary or permanent ban, i apologize for the inconvenience, thank you,