Hawk laser/led foregrip - Hawke Sport Optics Red Laser/LED Flashlight Fore Grip

I have several Hawk product mainly rifle optics in which I’m very happy with . I decided to get the combo for grip , it’s nice and all sturdy and look and as a FOREGRIP solid but the laser works but the light doesnt . I replaced the batteries ensuring not to over tight em the cap nothing . I tested the batteries included with said grip they was full charge tried calling nothing . So I’m not sure the problem QC idk. This brand of add-ons are rather rigid sold products but this fire grip didn’t make it on my rifle . The other issue I get thru to anyone to get this resolved .