Booking — Add to Cart not working

With your theme, ordering tours only works if the user is logged in. For an example, please try ordering from this page:
http://hilofoodtours.com/shop/hilo-dinner-tour/

Your envato theme page shows WooCommerce 3.1.x compatibility. Is it also compatible with WooCommerce 3.2.5, which our site uses?

PHP error log repeatedly shows these errors:
[13-Dec-2017 05:23:32 UTC] The The “add_to_cart_fragments” hook uses out of date data structures and function is deprecated since version 3.2.5. Replace with woocommerce_add_to_cart_fragments.
[13-Dec-2017 05:54:33 UTC] PHP Deprecated: Automatically populating $HTTP_RAW_POST_DATA is deprecated and will be removed in a future version. To avoid this warning set ‘always_populate_raw_post_data’ to ‘-1’ in php.ini and use the php://input stream instead. in Unknown on line 0

Is that normal?

Thank you for your help.
-Ian