The mobile app reflects the language that is set on the web app. To change the language on the web app, please follow the instructions listed here: How to set my time zone and language
The mobile app supports the following languages:
1) If the mobile app supports the language chosen in the desktop app, the first time after an update is rolled out, the mobile app language will be set to the language chosen on the web app.
2) If the mobile app does not support the language chosen in the web app, the mobile app language will default to English