How to shortout unexpected error for azure fundamental exam schedule?

I am facing difficulties scheduling my Azure Fundamentals exam using a voucher. On 03/09/2024 at 10:35 AM IST, I reached the payment option after completing all the steps. However, I was unable to proceed due to issues with international payment. Since then, I have been encountering an "Unexpected error" message after clicking the "Schedule Exam" button. This has occurred with two different accounts. Assistance is needed to resolve this issue.