Thank you people who supported me with kind words and I don't really care about others. I'm not gonna be one of those who will jump out of nowhere and threat everyone that I quit and expect that someone will care and do something. Tech support from both cgtrader and hyperwallet kept directing me to each other and eventually refused to help me. First I logged in just to turn off this annoying wildcat notofication (12 usd for a model? are you kidding me?) and saw that a lot of people answered. But now I will also write an e-mail to tech support to remove my account, because I couldn't find any "delete account" in my user settings.
Don't support exploitative platforms, internet is big and there're must be better places to monetize skill. I don't want to bother anyone, and just upload all my stuff for free on sketchfab. Everyone have a good day.