Hi, Astha

Usually, all the details of examination are provided over the admit card. This might be a minor issue over the system on which you got the admit card.

Do contact the related officials, you may get their contact over the site itself. Mail them the photo proof of your admit card, also if a WhatsApp number is available to do WhatsApp them this.

Hope your problem is resolved asap. 

All the best for your exam.

You can contact college officils sending screenshot of your admit card and credentials. 

There can be some technical error on their side so you may have faced such issues. Kindly email them all details and ask for date of exam as the official shall have full right to check database and let you know if any discrepancies found.