No business & suspened GST registration

Dear Expert
Can anyone suggest the implications of the following?

1. Any dealer who had taken registration in 2017 and submitted one return in December 17 and no further return afterwards because of no business..
2. No return afterwards submitted..
3. And surrender the registration on March 2022..
4. and further non submission of clarification of the notice served in due time..
5. and further gst registration suspended by the state authorities..
6. and afterward, message sent by authorities for submission of return December 21 & February 22..
7. and no action has been taken by the dealer as he had no business...

what may be the consequences for non reporting to the department for their messages?

please suggest.

regards

SKDas

Regards