There also might be another thing causing it that I am aware of.
You might be using the fit to window for your screen. That is another problem I have encountered in my experience.
Try setting it to Actual Resolution or Physical Size. Then reposition the UIs.
I’m not sure I completely understand your problem because you didn’t provide many details, but I can try to help.
If you want the frame to be centered for every resolution, you need to set the anchor point to {0.5,0.5} and then set the position to {0.5,0}{0.5,0}. I wrote a quick explanation of how this works on another thread:
I can see you used scale to size the frame because it’s a different aspect ratio in the two videos. This can cause problems when it comes to the relative size and position of elements within the frame if you’re not careful. You might want to look into using an AspectRatioConstraint.
If you want to precisely size the frame you need to use offset. I would actually recommend using offset to size UI elements because it’s easier to work with.