Didn't you save the QR code or the back up key of your 2FA?
The support page seems to work fine in my end:
- Go to https://support.binance.com/hc/en-us/requests/new
- In the drop down, select Help with Google Auth as your issue (the complete form will be visible)
- On the Google Auth(2FA) Issue Type, select Disable Google Two-Factor(2FA)
- You will then see this:
Please visit the link according to your issue
(have or don't have backup key) and read the guide carefully.