Hello Gokulakannan,
Thank you for contacting the Microsoft Community.
I’m sorry to hear about the trouble you had in scheduling your exam. Allow me to further check and help you with the registration.
I also appreciate your effort in trying some basic troubleshooting steps to fix the issue.
If the Submit button is still not working, please try these recommendations:
Open your browser in InPrivate mode.
On your Certification profile page, please ensure that all the required fields marked with an asterisk * are correctly filled and remove any special characters (like., \! @ # etc.,) from your account information then click Submit. then Next.
In case that you are still encountering issues, please provide us with the step-by-step screenshot of the incident in a form of PSR (Problem Steps Recorder) starting from the sign in page until you reach the error along with the requested information in the private message I have initiated.
I look forward to your response. Please note that if no response is received after two business days, the case will be closed and locked. After the case is locked, we will no longer be able to respond, even through Private Messages.
Regards,