Requirement to file annual return

narayan maheswari (student) (140 Points)

14 March 2020  
My firm was registered in gst composition scheme. I filed all returns upto December 2018 including annual return of FY 17-18 and then cancelled the gst no. Now it's status is showing gst no. cancelled but I can login with old user id & password. Is it mandatory to file annual return for FY 18-19??
Second ques is do I need to file any other return as I did not file any final return at the time of cancellation?