SIP Reviews Pro causes critical error

Hi,
I tried to contact support for 2 weeks now but no reaction.
The latest version of the Pro plugin is causing a critical error and breaking the layout of the website, see: https://staging.wielrenschool.nl/bikefit/

This is a similar page without the SIP reviews shortcode, and how it should look: https://staging.wielrenschool.nl/reizen/hotel-wielrenschool/

Who can help??

The page I need help with: [log in to see the link]