Solutions
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JewishBanana's post in LCPDFR Light Modes not toggled was marked as the answerI believe the problem might be that your numpad keys have to be enabled. Make sure your numbpad is enabled and then try pressing that key.
I most keyboards, mine included, for the numlock key there is usually a small light to tell you if it is on or off so that way you will know if you've enabled your numpad keys.
Hope this helps.