Thank you for contacting.
Could you try to follow the guide attached.
I tried that . is it possible that the device is too old and that the server no longer exists?
There are two possible ways to PC connection for TWCT22 configurations, first is single RS232 connection, which apprized with Server program and second one is via GPRS which done with Mserver program.
Serial port is used for communication with internal WEB server. Internal WEB server allows editing configured data. RS232 port is used just for configurations of TWCT22 and it is not able to communicate with additional devices via RS232 port. Double check the RS connector PIN-out and cable:
Software link is attached below: