open the toolbar menu accessible in upper right corner and switch on "Log communication"
let the app communicate with the ECU for a moment so it can log data (wait at least 30 seconds after dashboard lights go on) or wait for the event when the malfunction occurs before sending the logged data
activate the option "Share log" by clicking the label System log repeatedly 10x (a short toast message "OK" will appear at the bottom confirming the action), then open the toolbar menu and click "Share log" to send the log via an email app (address and subject will be filled automatically, you may have to install an email app on your Android device if you haven't yet)
