If you've lost your Google Authenticator code, you can still try to log in with the secret code, which you should have to write down, while was setting up GA on the account.
If you don't have that code as well, please open the support ticket and provide us as much information about the account as it's possible to identify and verify your ownership of an account like:
- E-mail address
- When did you log in last time
- Do you have any referrals? How many?
- Who did invite you
- Payment proof to your account (if any).