What do you mean? I can easily access the site, there is no error like you saying. If you entering wolfbet for the first time today then it will show you 7-Day streak option. And it says you need to active 2FA to claim the reward. You can easily close this option and use the site.

Or you getting the error during login? If you have enabled 2FA previously then you need to input the authenticator during login. Otherwise it will show a error message “code is required”.