Hello Dmytro,
I followed the steps below to try and isolate the issue:
– Logged into WP
– Cleared my cache
– Desactivated the plugin
– Loaded the shop page
– Reactivated the plugin
– Loaded the shop page again.
I give you the link of my debug.log file, which includes the warnings related to undefined properties.
Let me know if you need any further information!
Best regards,