GoControl PD300Z-2 Can't Turn off LED Bulb

Hello Folks!

I was very excited to receive a GoControl Z-Wave Plug-in Dimmer Module - PD300Z-2in the mail today, but my enthusiasm has been tempered by the realization that it is incapable of fully turning off my edison-style bulb, the “filament” remains dimly lit even when “off.”

Do you folks know of any hard/firm/software means of eliminating this problem?

Thank you!

Amazon link for those curious.