Blocked GST number

Hi,

since GST is still new to many of us and hence if you can suggest the way.

I am having an issue with. due to certain reasons and salary irregularity I was not able to pay GST from the beginning.

Initially some office HR took the initiative to open the GST number but didn't provide proper documents and the GST NUMBER GOT BLOCKED or Cancelled.

Now:

I wanted to pay and clear my GST from July2017 - Aug2018 all in my previous GST number which is now blocked.

Please help me and let me know how to reopen my blocked GST NUMBER and what will be my Fine amount.

Thank you