Video is smaller then the frame

Hey

The videoplayer was working perfectly but since a few days the videoplayer fills the elementor collumn black and only in a small area the video is playing on the left side. The same error suddenly appeared on every page. It works on mobile. Only on pc it has this issue. It has the same issue in Firefox and Chrome. And the strange thing is: In the Elementor backend the video works perfectly and fills the whole box. So on the frontend the black background area should be filled with the video but instead it has a small video on the left side but it works in the backend and there the area is completely filled with the video as it is supposed to be. The problem only appears on the frontend on the actual page. It used to work. I installed new plugins and I also had to switch off all plugins for a moment for troubleshooting. I also updated Master Addons. One of these steps might have caused the issue. But switching all other plugins off for troubleshooting does not fix the video. When I reloaded on chrome a few times suddenly it worked as it is supposed to but then when I reloaded again it did not work anymore.
So it works sometimes. On mobile when loading it looks for a moment as if it would not work as the video is to small but without a black box but then the video jumps to filling the whole box. So it is working on mobile after half a second of loading. And it works in the backend. Which makes me think maybe it is not working when the screen width gets too large.

You can see the videos on the page I linked to. Make sure you use desktop pc to see the issue. Where there are black boxes with small videos in them. Those should fill the whole black box. And they used to do that before.

Ps. Since I am just talking with you: Another thing. I disabled picture in picture mode but the button still appears. Which is a problem since those videos are supposed to stay where they are. But that is another thing.

Regards. Stephan.

The page I need help with: [log in to see the link]