Can’t grant google permission

Im currently on this big trouble setting up a gmail account on postman, i did everything perfectly with oath2, but the button that allows me to grant permission to google use gmail, does not work at all.

It gives me this error:

400. That’s an error.

You don’t have permission to access some scopes. Your project is trying to access scopes that need to go through the verification process. {invalid = [https://mail.google.com/]} If you need to use one of these scopes, submit a verification request.

Any ideas?