Hello Still Bad, I know you found the issue, but i feel this might help. I have a gaming laptop, its a Lenovo Legion Y520, but i "upgraded" it a little. It has a 10LKB.
The Forward Slash, or ANPR button for me, is on the top right of the NUMPAD, Yes there is one as well on the left of RIGHTSHIFT Button, but that is default for texting In-Game.
So i replied just so you know and dont have to play around in the settings, not sure what you have Keyboard or Laptop Keyboard but yea.