From the help information:

Data is received at the path httpds. So, if your system is accessible at, for example, 'http://localhost/', data should be directed to 'http://localhost/httpds'.

So in your case you want 192.168.1.44:4200/httpds to send data in.
Click on listen to check and ensure data is coming in:
0_1581201332139_986550e0-f136-46e9-9313-e534f02cac64-image.png

This should help you get started

Fox