This can be changed in Network tab>Set IP textbox. If using mobile hotspot, you may also need to set the IP address manually (give the network discovery process a few seconds before trying that). When using USB tethering, the PC will use the phone to connect to the internet unless you change Windows network selection priority Manually set the IP address and port in Trinus PC Server, matching Trinus Android client Otherwise the connection might fail or be slower
USB Tethering may require updating Windows USB drivers from your phone's manufacturer. Ensure phone and PC are on the same network (Wifi) or Tethering is working (USB) There are some common issues that can occur for certain configurations.