tried to use my nikon snapbridge app as a remote monitor and works great until you turn on the gimbal.  anyone else have this issue and how else can you use your iphone as a remote monitor while videoing?  i use underslung mode and can't see the view finder.  thx for any advice

With the Canon app you can’t have the phone as a remote monitor whilst the camera is connected to the Ronin via USB. So you can have a stabilized camera with a remote screen but no controls on the gimbal, or a stabilized camera that you can control with the buttons on the gimbal but no remote monitor.   I imagine the Nikon app / cameras are the same. Try disconnecting the USB cable from your camera and see if that works. The gimbal will still stabilize it but the buttons on the gimbal won’t work.

Only way to have it all is to buy something like an Atomos Ninja.