Cameras Offline Several Times Daily

So 36 hours into owning this dodgy system and its 4 cameras have spent more time offline than on. I plan to return for a refund so took cameras down and just placed them 50cm from the base station but left them on. Interestingly, two cameras, even at such close range have less than full strength wifi signal. It’s no wonder these pieces of crap continually drop out if they can’t maintain a strong connection from a distance of 50cm. I’ve attached a couple of images with the signal strength circled and another of their proximity to the base.