Question Issue with new camera monitor ?

[Magician777]

Hi Guys.

I just bought an Osee T7 7-inch Camera Monitor.
It hooks up to my Nikon Z5 camera, it's pretty good.

My question is, on my old monitor I could review the pic I had just taken via my 7" monitor.
On my new monitor, crystal clear picture, but I can't seem to review it via the monitor.
Any Ideas?

Many Thanx
Gary
PS it works with video, but not with still pictures.