Problem: The client is experiencing an issue where a coupon created in English does not function when translated into French using WPML. Despite attempts to create a separate coupon for the French version, the need remains for the original coupon to work in both languages. Solution: We have identified that this issue is a duplicate of an existing support ticket. We recommend following the ongoing discussion and solutions provided in the original ticket thread. You can find the details and participate in the resolution process here: https://wpml.org/forums/topic/coupon-only-works-on-the-english-version/.
If this solution does not resolve your issue or seems outdated, we highly recommend checking related known issues at https://wpml.org/known-issues/, verifying the version of the permanent fix, and confirming that you have installed the latest versions of themes and plugins. If the problem persists, please do not hesitate to open a new support ticket for further assistance.