New client

Please RIOT GAMES allow us to use old cliient also, i abandoned like 10 games bcz of new client, i know that i can use old one but in future i heard that it wont be allowed, so please allow it, i just failed my promo cause of damn client it was black screen, i couldn't pick, and i "Left champ select" this is 3th time i'm losing promo bcz of client. Please allow it in future [zombie-brand-mindblown]