Here are the instructions on Windows to find out what ports QoppaPAS is listening to:
1- Find what is QoppaPAS Process ID
Open a command line prompt and type in the following command:
tasklist | findstr QoppaPAS
which on my machine returned
QoppaPAS.exe 1464 Services 0 99,372 K
QoppaPAS PID (Process ID) is 1464 (second column).
2- Find what ports QoppaPAS is listening to
netstat -aon | findstr 8084
which on my machine returned
TCP 0.0.0.0:8090 0.0.0.0:0 LISTENING 1464 TCP 0.0.0.0:8093 0.0.0.0:0 LISTENING 1464
QoppaPAS is listening to ports 8090 and 8093