GST login error

Rehana (Student CA IPC / IPCC) (22 Points)

21 April 2017  

I have created user ID and password of dealer but when I am logging into gst website for migration of service tax to GST. It shows following error: 

"Your RC under is cancelled, therefore, your Provisional ID stands cancelled. Hence you are not permitted to migrate under GST"

Kindly advice me how to resolve this.