Sony a7r4 continuous bracketing not working with 15.1.1, win10

Has anyone had a problem with getting the bracketing to work when shooting tethered with the a7r4?.  I'm using a usb3-usbC to the camera with? I can shoot individual images and manually adjust the exposures but putting it to cont. bracketing will not work.  I think I tried everything, but probably have missed something.. i've had 4 and 16 shot working tethered just fine....solving this bracketing issue is very important to me for an upcoming job, 

Any suggestions on the procedure to get this working are very much appreciated.