Using the generated javascript code, google login does not complete. you get the google login prompt and after you enter your credentials a big empty window appears with the url: https://api.backendless.com/users/social/googleplus/authorize?state=2D331FA8-9082-0FE7-FFE4-393D0C792E00&code=4%2FhmP-Q-rvrDVLQPcgf-9hUcGHUXWG6IkHAoJp00daUhk#
There is no error in the UIE developer console.