Google Shopping availability format issue – “instock” instead of “in_stock”

Hello,

I’m experiencing an issue with my Google Shopping feed generated by Product Feed PRO. The availability values are in the incorrect format :

• The plugin generates <g:availability>instock</g:availability> while Google expects in_stock
• Similarly, outofstock should be out_of_stock

This is causing validation errors in Google Merchant Center.

System information :

• PHP : 8.2
• WordPress : 6.7.2
• WooCommerce : 9.6.2
• WooCommerce Product Feed PRO : 13.4.1.3

Is there a specific setting in the plugin to correct this format ? Is there an option to modify the availability values format according to Google’s requirements ?

Thank you in advance for your help.