Great game but....

Ok so as of yesterday I am level 60, I have over 300 million to spend and can not level up any more, stuck currently at level 60 but I am wanting to play the next high roller room at 65 but again cant level anymore, just curious as to why and when I will be able too? Aside from that it is a really great game, best slots game I have found

Flubskii692113 about Casino Tower™ - Slot Machines, v2.1