That's your local IP address. Is your mobile device on the same network? Also, you need to use port 5055.
Thank you for your feedback @Anton Tananaev.
Hi,
I just installed Traccar 4.3 version. My iphone (client) location is updating on the status but on the server it shows offline.
Server URL is http://demo.traccar.org:5055
Thanks
I have installed traccar server on my machine and also downloaded apk of traccar client. Even after setting device identifier(Unique id of phone) and server URL( ex HTTP://192.168.0.6) on application and adding identifier with same id on server it is showing status Offline and not able to connect and trac.