Hello,
First of all thanks for choosing our Theme, we are glad to be you in the WoodMart WordPress family :)
I have visited your website. Please try re-creating the product then clear cache and check back.
If the problem continues then please deactivate all the third-party plugins, activate the parent theme, then clear cache and check back.
If the problem still continues then leave all the third-party plugins deactivated and provide with the admin panel login details of the website with the permissions to debug then we will troubleshoot with the theme plugins.
Best Regards.