The screenshot for the skin looks like it was done in Windows 7, so that is why i does not look the same in Windows 10. There have been changes to Windows 10 that may have affected how the skin functions in Windows 10. I am sure the author will respond as soon as she can.
I thought that as well before purchasing the skin, but the Author mentioned:
"Updated a few glitches, startmenu mouse over. etc. For windows 7,8 and 10 Zip contains windowblind and 3 wallpapers"
so I thought the skin was updated.