Numpad key bindings partly not possible

Here are the STR

-start Poe 2
-log into game with any character
-once ingame try to keybind the numpad keys "/ * - + <Enter> ,"

Result:
Its not possible to map those mentioned numpad keys

Expected:
It should be possible to change those players like me playing with numpad.
Due to this issue I am forced to play with gamepad which has other problems (other bugreport)

Bump, I have the same request (would be very useful addition for us lefties/left handed people)