Problem: The client created pricing forms using the WooCommerce plugin and AcoWebs WooCommerce Custom Product Addons plugin. The forms function correctly in the first language, but issues arise with displaying or hiding fields using the Global Attribute in other languages. Solution: We noticed that the missing fields do not have the same settings among languages in the conditional tab. We recommend checking the settings in each language to ensure consistency. Unfortunately, the plugin documentation does not mention the recommended method for translating the conditional tab, and the field in the translated add-on is greyed out, making it unchangeable. We advise contacting the plugin's support team to inquire about the custom field name, which will allow you to set it to either copy once or translate and change it to the translated version. For further guidance, you can refer to the plugin documentation here: Acowebs Plugin Documentation.
If this solution does not apply to your case, or if it seems outdated, we highly recommend checking related known issues at WPML Known Issues, verifying the version of the permanent fix, and confirming that you have installed the latest versions of themes and plugins. Should you need further assistance, please open a new support ticket at WPML Support Forum.