To be able to send private transactions/collect fees you will need to set up your router opening port tcp 32348 and be sure you firewall allows xc app trough port 32348. If one of those is set up wrongly your private transactions/mixer fee will not work there is a readme file as well where it explains it in ver 2.49.02
According to portcheckers.com, port 32348 is open and my Windows Firewall allows the XC app. Not sure if there is anything else I should be checking....
