LinkedIn Twitter Signup doesn't works!

Integrated the plugin, created the apis, Facebook, Google SignUp works very well but a blank page shows up on Twitter & LinkedIn Signup options are clicked!
Also the permalinks features sends the users to register on the main wp-admin panel even after setting up the Registration links and permalinks options.
Website: http://cinemagazinedigital.com/

https://wordpress.org/plugins/users-ultra/