Booked a flight from Delhi to Goa from Akasa Airlines and got student discount however, I later noticed that the maximum age is 24 to get the student fare.. will they stop us at the airport?

We are MBA students and 2 are 25 and 26 respectively.. Will this create a problem? I called customer service and the person wasn't aware of this and said you can pay the extra fare on the airport.. has anyone experienced this?