sir you have send me the recordings so far but when i open it says that it is unauthorised to view for me. my email id is saswatadasgupta@rediffmail.com

Dear student,
We are sincerely apologetic for the issue created. We would get back on this. Please allow us some time to look into this. There can be multiple reasons either on the technical end or some plugins are missing. Whatever it is, we would get back.
Regards