25 Chutti — not able to book the tickets.

Address:

Thane, Maharashtra, 400601

Registered the no and coupon code but to use it when tried on the site to book then the error is occuring like this. Not able to book any locations.
Can you please assist me that how to go on with the site and get the place booked. Even called customer care but they seemed that you need to get back to us with the screenshot for the same.
Need to have knowledge whether we need to register and then immmediately redeem to use that or is there some other thing.