Ipad image size issue

Hello!

I have a client who claim that on his ipad the header image (big image under navbar) is not showing correctly on his ipad in landscap position, the image is like disproportionately zoomed in, while in portrait it look ok.
https://jc-weboptions.com/benjam3/

I don’t own a ipad so I tested it on an adaptive view simulator, but from what I read on some forum it would be commun issue on IOS with Safai/Chrome and it is not viewable on a simulator.

I tried some solutions I found on the web with no success.
Note: I tried with the image as a background image and as normal image with same result.

Anyone know how to solve that?

Any help is much appreciate!