no audio connection to outside player I am on macOS Big Sur 11.6.2

[herman]

last period I used jk on regular basis; more times a week, I have been away from jk for some time. When starting again we do have video connection (2users) but no audio connection. sound from microphone gets into audio interface; green? leds light up when sound. when ticking on microphone with finger I hear that via headphone. Can the Mac OS big sur 11.6.2 be a source of issue?
what remedy can be suggested?

[herman]

Problem solved . Required to reinstall JK. Be aware that you first be sure that you have removed all of JK first. When then reinstall JK you need to install you audio tools too. So you can recognize that you indeed are reinstalling JK.