WPML implies the WordPress Multi-Language plugin. This is meant for this paid plugin that you can purchase and install to integrate with your app if you need multiple languages on your app. Once you have installed and activated the WPML plugin in the site backend, allow with “Yes” option here to make it functional. Link for this specific plugin is provided here
This is the default view of the app after the addition of the WPML plugin. Check the language of your choice, for instance, if you select the Arabic language, all the content on the app would show the Arabic language by default as shown below when you essentially enter the data through the Arabic language.