I can’t proceed with 2-step verification

Hello, please somebody help me! I created an account with my Facebook... and automatically my razer account linked with the email that is registered on my Facebook (which I don’t have the password anymore)... I load my account with $200 and I can’t buy anything because I need to do the 2-step authentication... so the razer system send an email with a code to this email that I don’t have access....HOW CAN I CHANGE THIS F****G email? it’s really frustrating! thank you