This is not really important... but it did not work for me and I just thought that maybe someone has a tip.
I tried all the links below to remove the watermark, no success...
https://www.windowscentral.com/how-remove-evaluation-copy-watermark-windows-10
https://www.ghacks.net/2015/08/20/how-to-remove-evaluation-copy-watermark-in-windows-10/
https://www.windowsq.com/t/add-or-remove-windows-build-and-version-watermark-on-desktop.543/
I tried all the links below to remove the watermark, no success...
https://www.windowscentral.com/how-remove-evaluation-copy-watermark-windows-10
https://www.ghacks.net/2015/08/20/how-to-remove-evaluation-copy-watermark-in-windows-10/
https://www.windowsq.com/t/add-or-remove-windows-build-and-version-watermark-on-desktop.543/