The serial connection is not working, that is clear. Don't sweat the UDP-TCP difference just yet.
1. Did you set the Config manager to the proper mount type?
2. Did you choose the comm port -- actually try pushing the find button for the app to identify the port on which your mount is. If it fails the usb-serial is not working or not well enough anyway
3. If the app finds the serial port, set the app port ot he proper comm port. then press the top right do it button to connect. Then try the button to connect to serial. If it does then you are good.. If it fails then the serial port is not working.
The bottom status line of the app show you the connection status of serial and TCP.
Wes, Southport NC
PMC-8, ES ED 127, 10" LX200GPS, Astro-Tech 8" Newt, ETX-90
Polemaster, Orion ST-80 and SAG
Electrical Engineer, Retired