Cookie wrote Shadow bans can be linked to accounts as well. If you are shadow banned you will have a very high ping it will usually change in intervals of 100 until it gets to 350 and if you do end up finding a game it will be a cheater lobby. Best bet is to not play on the account for a week if you wanna be extra safe 2 weeks and you should be fine. Only reason I know this is because I rage a lot with EO and I used to spend a ton on phone verified accounts until I realized accounts can get un-shadow banned and I could just cycle through the current stock of accounts I had. I rage constantly with EO and personally never seen an account shadow banned for longer then 7 days.