Razor keyboard won’t identify on my iMac.

I plug my razor keyboard into my iMac and it asks for me to press the right key next to the left shift. When I do so nothing happens. Than when it asks me to select keyboard type. I select ANSI(United States and others). And omeglz than all the keys are all over the place. Such as Z is 7 or backspace is .... anyone have a solution? Thanks