Bookingscalendar is not working in RW7

Since more than a year my website is working good, since I upgrade to RW 7 i have serious problems with my bookingscalendar on this site. The bookingscalender is a script that i bought from . Now this bookingscalender looks no good. The theme is build with the carbon theme from Nick Cates. I asked realmacsoftware for a sollution, they say to make this calendar on another page, what i did, but it was the same view I’ve got.
Did somebody have a solution for this problem?
You can find the bookingscalendar on the bottem of the page.