Resetting your credentials:
1) get your smartphone;
2) open Google Authenticator app;
3) scan this new QR Code;
4) access your email and confirm the reset.
First log in:
1) access your email and confirm your subscription;
2) get your smartphone;
3) open Google Authenticator app;
4) scan this QR Code;
5) type the 6 digits in 2FA Code field;
6) click on log in button.