banned account

SoberSwede - Summoner Stats - League of Legends
SoberSwede / / Lv. 90
this is my permabanend account from 1 year ago, somehow someone is playing on it and changed the name of the account while it is still permabanned unfortunatly i forgot the log in information but as i regulary check my account i noticed that my original name MISSIO doesn't exist anymore and i get on this page instead. It has all the games and everything i had when it got banned and all i want to knwo is how do they play on my account if its banned?
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