Try to refresh page or try after some time sometimes website get glitched due to heavy traffic .

Else call on their helpline number !

good luck

Try refreshing, it happens sometimes when websites get overloaded with people trying to do the same thing. If that doesnt help, mention your Btech as completed 2 years prior and Mtech thenafter and mention it as integratrd degree. If you get selected into any IIMs you can then clarify for the same while going for the interviews or at the time of registration.