gst regn. cancellation

sir
ones gst regn. has cancelled vide order dated 29/8/2019
by form gst reg 19 [see rule 22(3) ]
endorsed with application reference no. ..... dated 28/4/2018

but on portal there is not any notice/scn regarding such arn dated 28/4/2018.

now my gst regn has cancelled
please guide me

thanks with best regards