16:10 Aspect Ratio Resolution Issue

[Masemtrzo]

I play on a Microsoft Surface Pro 7, and the default resolution is set to 2736 x 1824, the native resolution of the display on Surface. Once I change the resolution, I am unable to set it back to it's default resolution, and stay stuck with, seemingly, regular 16:9 aspect ratio resolutions (you know, with black bars across the top and bottom of my display). Is there any way to fix this, so I can continue playing in 2736 x 1824, because I am not given the option to select it?!