cannot login to access content

Hi,

I have set up "pay per view".

I am testing my content. With the "one item" purchase, I can get to my paypal account.

With all other access levels, I can't get past the login to make payment. Help?

How do I get the "Login with Facebook", "Login wiht Twitter", "Login with Google" and "Login with WordPress" to work?

"Login with Facebook" just doesn't respond - no new page, no error, nothing.

"Login with Twitter" just gives me a blank pop up.

"Login with Google" gives me "400. That’s an error.

OpenID auth request contains an unregistered domain: http://www.showmehow.today".

I tried "Login with WordPress" through "Register" and it says "Registration has been disabled.".

Help please!

Thanks,
Elina