To change the time zone in the app, you must access your device's settings. This is generally done through the "Settings" section on your mobile device or computer. Look for the "Date & Time" option, and there you can adjust the time zone based on your location. However, keep in mind that your local time will only be displayed in the contract specifications showing the instrument's trading hours - the main time used for charts, etc. will still be server time (EET timezone), this cannot be changed.