Kabini backwaters jeep safari

The Govt. website to book tickets is [https://tickets.nagaraholetigerreserve.com/safariDetails/3/Kakanakote%20(Kabini)](https://tickets.nagaraholetigerreserve.com/safariDetails/3/Kakanakote%20(Kabini)) but then there is this other website which seems to take bookings [https://kabininationalpark.org/details/](https://kabininationalpark.org/details/) I have been trying to book tickets on the Govt. website and it always shows that there are no tickets. But the second one works but is not run by the Govt. I am wondering how legit the second one is. I wanted to know the ways to obtain a jeep safari ticket to Kabini backwaters. Please share information if you have any.