reserved accomodations don't have an amount in woo commerce basket

We use easyreservations premium with the woo-commerce webshop. This has been working, but seems broken now. When your reserve an accomodation, the amount of the reservation in the shopping-basket is 0. What could be the cause of this error?

This is the page: http://chalets.pvumcg.nl/?easy-rooms=t-stien-n-boer

Thanks in advance,
Martijn Koek

Please try the latest easyreservations.org/beta. If it worked before what did you changed?
Regards