AirthingsHouse Kit Plus - (Radon, CO2, VOC, Humidity, Temp, Pressure)

I have 3 of these devices and one of them started reporting wildly high numbers on radon. I moved another one exactly next to the one reporting high numbers. 4 months later, they aren’t even remotely close in their numbers. I attempted to contact support and was dismissed as the unit is “working fine”, and given a link that 2 units won’t show the same numbers… i understand they won’t be 100% in line with each other, but to have one say the radon is fine, and the other report that cancer is imminent, is just a crap product. I will no longer be giving money to this company. They won’t help if their products are not working.