WooCommerce Bookings Calendar not working with Rock Star Pro

After the latest WooCommerce update, the Rock Star Pro is outdated. Our calendar stopped working! Go here: https://www.theescaperoom.no/booking/bestilling/ Try hitting the next month on the calendar (go from February to March) It does not work. (Or try ordering something Tuesday the 20th. of February.) We have spoken with Woocomerce and they say the problem is the theme not with them. Can annyone help?