"User is banned"

I was playing the flight with some friends and due to connection issues we got separated. I left the current match I was in to rejoin them. I figured there was only 1 guy left in the match after I left and the game was snowballing anyway so what does 1 match matter?

Except now I can’t play and only get the message “User is banned” it doesn’t even tell me HOW LONG I’m banned for like MCC does. What the hell?