Unable to login to power store

Hi,
I recently implemented a PS 4.5 installation and while I am able to register successfully, then log in, once I logout I can never login again?????

After the initial registration I am directed back to the login page, but have a link to modify my profile which I am able to do, I also have a link to view cart which I can do and am able to proceed all the way to Paypal.

I tried verifying my email and not verifying, both ways I get the same results Once I click the logout link I am done.

This is very frustrating. I hope this is as simple as most of the other issues I have had, but I fear it will not.

I have uploaded fresh copies of all the user_ pages in the root of the ps directory, as well as a fresh registration directory within the plugins directory structure. It is worth mentioning the PS install is in a sub directory on the site and I have a fully functional login section created with SA being utilized in the higher directories. These both use the same database table and I have no issues logging in or out.

I am also able to login successfully on the local PS installation using the same user_login page?????

URL to site in question is cart/


Any advice would be welcomed.

Regards,

Gary