Logs is an optional tab. It can be enabled in the Settings > Application. When enabled, it writes down each activity made in the gateway.
You can check the whole list of activities or show only errors. To do that, enable the Errors only tumbler.
You can also search in the log by a sensor number, date and time, or error type. If you need to use the log file outside the app or send it to Moeco team, use the export option. To do that, tap the export icon, select the export method, and confirm your choice.