You will have to enter your registered email id and password that you created for TISSNET. If you are still not able to login, mail their helpdesk at: pgadmission@tiss.edu (mailto:pgadmission@tiss.edu) . You can also contact them at 022-25525252, 91-22-2552 5000. Mail them from your registered email. Before that once try shutting down your computer and restart and try it again.