Mavic 2 Pro and Controller video and picture switching and disconnecting

[PointG]

Hi folks,
I'm having problems with my Mavic 2 Pro.
The video keeps disconnecting and in the go 4 app the screen keeps changing on its own, switching between the video and photo as well as other changes without user intervention
Also when I look at settings/about the camera serial number appears and disappears.
I am having these issues with the regular and smart controller.
The controller is next to the drone.

For the stock controller my info is-
DJI Fly 4 V 4.3.50
Aircraft- 01.00.0770
Remote controller- 01.00.0770

I did a screen capture of my iPad and hopeful can attach it here.

Any suggestions on resolving greatly appreciated!
Cheers,
G

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[PointG]

Update= have ungraded and downgraded, mixed and matched firmware's with no success.
Also tried with both stock and Smart controllers. (Smart controller works fine with my Phantom p2P)
All worked fine last time I tried but that was a few months ago.
Any thoughts at all welcomed.