WooCommerce Product Add-ons is compatible with WPML. This plugin has been tested thoroughly, and you can use it to build multilingual sites without experiencing issues.
WooCommerce Product Add-ons
– Developed by WooCommerce
Last tested on: March 21, 2022
Product Add-Ons allows you to add paid or free options to your products using several field types including radio buttons, checkboxes, drop-down fields, custom text inputs and more.