Strange mark on my Apple Watch display
So I've had my Apple Watch for just under 4 weeks now. Every new Apple Watch has a sticker on top when you receive it, which I removed and saw a strange mark leftover underneath. At first, I just ignored it and thought it would go away over time, but it didn't. I have wiped the screen with cleaning solutions but to no avail.
Weirdly, today I noticed when I long pressed an on app on screen that the top and the bottom halves of the display showed different colour schemes, exactly divided along the lines visible in the attached images. I'm starting to thing this might be a display issue? Can anyone shed any light on what this might be?
Apple Watch Sport