Qual a Device Category / Tipo de Dispositivo para usar a porta 20558 ???
Probably you are talking about the GPS103-B tracker.
Probably you tried to change the settings of the object. It was an old type that was supported for users who selected it earlier.
For now, try using the settings:
Device Categories - Hardware
Device Type - Coban GPS103-B
You will need to change the port and server settings of the tracker. Try using IP server format
Server Host - 188.8.131.52, Port - 28961
You can read more about server formats in the application here - https://forum.gps-trace.com/d/586-ip-and-dns-server-formats-in-the-application