SMacNinch Note that this method is not described in the link you provided.
It is provided in the linked document for me with the exact same wording, right on the top. Not sure what document opens for you, but this is the support page from Microsoft that I was able to google in 3 seconds.
The right-click uninstall is the standard process for uninstalling apps from the Windows store. Basically every app from the store can be uninstalled that way. If it doesn't work, then there is a Windows problem. The app can not uninstall itself