India Post — Speed post received but not getting delivered

My speed post has been received at Air LGBI AP TMO but not getting any updates on the movement since 3rd November 2021.
Consignment no.:-ET[protected]IN
IVR:[protected]
The speed post should be delivered at Indian Institute of Management, Shillong. Pin:793018, Neigrihms S.O.
Please look into this and provide necessary help.