We also informed the client that Caldera Forms is no longer maintained and will be discontinued. Therefore, we recommended checking our list of compatible plugins that offer similar functionality at https://wpml.org/plugin-functionality/form/.
If the provided solution is not relevant due to being outdated or not applicable to your case, we encourage you to open a new support ticket. 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 further assistance is needed, please contact us in the WPML support forum.