Hello @Nithin P Varghese,
Thank you for connecting offline on this issue.
To address the issue, we contacted our support team and raised a ticket with the Azure Subscription/Account Review team.
A support engineer from the Account Review team will remove the block on your account, allowing you to sign-in back to your Azure tenant without any problems.
I hope this information is helpful. Please feel free to reach out if you have any further questions.