Review on 🔒 Mission Darkness Faraday Bag for Keyfobs - 2-Pack RF Shielding Protective Case for Smart "Always On" Keys Fobs - Vehicle Security Anti-Hacking Block Signal Relay - Small Electronics – NEW by Ricardo Mercado

When I first got Faraday bags from Mission Darkness and started using them for our keychains, they worked great. I could walk to the car with the key fob in the MD Faraday bag, grab the door handle and it wouldn't open the door and the car wouldn't start while the key was in the bag. Now a few months later these MD Faraday bags stop working and I don't understand why. I've tried several different ways to fold the top cover and yet now I can walk to the car, open the door and start the car (press the button) without even taking it out of my pocket. The bag is not torn or otherwise damaged, why/how does it suddenly stop working? few months, why worry? What is happening with it and how to fix it?