behringer uphoria 404hd turns off when I switch software I'm using



I'm using Pro Tools.  All is good with 404.

I close PT.


I open ZOOM to start a meeting.  Zoom does not "connect" to 404.

Or I open Itunes.    No Audio.  Itunes does not connect to 404.


Every time I switch programs (Itunes, Adobe Premiere, PT, Zoom) that I'm using.... I have to re-boot my computer.

Then if I open zoom (or other program) the 404 works.


Then if I try to go to another audio-using software (Itunes).... there's no audio.  I have to re-boot again.


Thanks in advance.