LOOPING PROCESS TO SIGN IN NORTON IDENTITY SAFE

Dear Norton Team,

I recently Re-install Norton Internet Security 2015 ver 22.5.2.15, unfortunately when try to sign in Identity Safe, It's not working, it's like redundant process after verify with the correct no. through text massage, it's looping to Sign in again.

I'm using Mozilla Firefox ver.40.0.3, please advise me how solve it.

Tks & B/regards,