do you have problem with black ????
its a old sponsor i guess and they havent gotten new jerseys
i think it has to do with polish laws concerning advertisment for gambling sites.
I could be wrong though
Bets ilegal in poland, so u cant use anything related
I thought the problem was that Valve is really strict with betting sites and etc., and GG.Bet (the sponsor that's hidden) is obviously one of them. Either that, or maybe a sponsor clash with ESL could be the case.