I noticed a javascript error on your website that may be due to unused code that should have been deleted in 1.14.2.
This unused code will be deleted in the next version (1.15.2).
To apply the fix now, you can
1.
Delete lines 11 to 55 in wp-content\plugins\booking-activities\js\global-functions.js:
https://github.com/bookingactivities/booking-activities/blob/1.15.1/js/global-functions.js#L11-L55
2.
Then, replace global-functions.min.js
with global-functions.js
in wp-content\plugins\booking-activities\booking-activities.php line 217:
https://github.com/bookingactivities/booking-activities/blob/1.15.1/booking-activities.php#L217
3.
If you are using a caching plugin, clear your cache.
4.
Finally, try again by refreshing the product page with CTRL+F5.