For any registration related queries please follow the link mentioned below: https://gem.gov.in/userFaqs

Also you can connect with our Customer Service desk,
Toll Free Numbers (Inbound): Call
1800-419-3436 / 1800-102-3436
(9:00 am - 10:00 pm Mon to Sat)

Railway Helpline: 0755-6627300 (9:00 am - 10:00 pm Mon to Sat)
Defence Helpline: 0755-6627400 (9:00 am - 10:00 pm Mon to Sat)

HelpDesk Outbound No's :
0755-6627270, 0120-6921990

or log your request at "helpdesk-gem@gov.in".