The Wyze app we use is actually a phone app, and is not optimized for tablets. Some screens will allow you to rotate them to landscape, but not all. Even the ones that allow rotation often start out in portrait mode until you physically rotate the tablet to portrait and back again.
You can vote for a proper landscape optimization here. Looks like they plan to do it:
What I saw on your video link is new to me, though. Looked like when you rotated it it was always in the opposite mode?