Any idea why the "Swipe for Split Screen" is grayed out and not able to turn on on my new galaxy z fold 4? See screens below:

Hello everyone, I bought a Galaxy Z Fold 4.I'm having an issue on my Whatsapp not being able to view it in app split view or multi view mode. It was working on my previous Fold 1 and I really like it that way.The settings for app split view for What...