Hello BV Sriraman,
Thanks for your question
Confirm these two steps:
"This account does not have an active sponsorship" will show for anyone who attempts to log in to the Sponsorship portal who is not the account owner. So you have to login with those permissions.
Proceed to log into Founders Hub, go to the Benefits tab, and select Redeem in the Azure sponsorship benefits section and try and confirm its redeemed.
I would recommend you contact founders hub support https://foundershub.startups.microsoft.com in the support tab here as they can help look directly into why if the above does not solve
You can mark it 'Accept Answer' and 'Upvote' if this helped you
Regards,
Abiola