Unrestrict page function not working?

Hello, I have been working with settings to help protect a Peepso social network site. I have successfully restricted the registration page which has already solved many problems. However, after someone successfully completes registration and wishes to be able to login using their VPN after that, how can I allow this? The peepso login function is part of the core and does not sit on it’s own specific page. I have attempted to use the Unrestricted function on the page login resides and it does not work. How can I do this? Thanks