Looks like your email address was leaked or you registered in one of those weird survey websites using it. Just try to unsubscribe from their mailing lists. The option is usually there below the message.
'Hope not' i registered this site before, because this is my personal mail and i never show others site mate. I have searching unsubscribe option but their no have. Usually, this is pure scaming mail, do you have check their mail quality? They're give me more offers for earn lot of money without investment or anything, even now i deleted all mail and i recommend everyone'' don't click unknown mail''
If I understand it correctly, you register on this site? So why are you surprise that you are receiving email from them? Rule of thumb in crypto is, separate your email and do not used register it to other websites. I suggest you used
https://protonmail.com/ for your crypto related emails, far more better in terms of security and privacy than gmail.