JoSAA has responded this message to your profile, this might be because

1. A technical glitch - for this, I would recommend ot contact to JoSAA/IIT-R immediately, To render this glitch

2. Your mistake - if you had written/bubbled a wron registeration number, than hands down. No one can help you now!

Thank You 

Hi Abhishek,

Don't worry about the situation, it happens sometime. I would suggest you to recheck your Date of birth format and the email id that you have used. Make sure that the registration number that you are entering is in all capitals. Because the portal for JEE advanced results is case sensitive. If then also you are unable to login then you may contact the following number and email.

Phone: +91-1332-284272

Email: jeech@iitr.ac.in

I hope I was able to clear your doubt.

Thank you