Used HP Spectra X360 Convertible 15

Used was working last time I used it and have reformatted ready to be setup again. Missing '.' key but purchased new one (have included) but was unable to install as not as easy YouTube would have you believe. Specs: -8th generation Intel core -512gb solid state drive -16384mg SODIMM DDR4 SDRAM -Windows 10 -Touchscreen -15.6 diagonal LED display -WLAN & Bluetooth Pickup only in the Yonge and Sheppard area. Cash or etransfer (in my account) only