Where can I find the MAC address and/or serial number of my product?

If your gateway is already installed, you can find the MAC address in the app. Go to: Settings > Home management > Gateway > MAC address and look for the 12-character code: "70: ee :50: xx: xx: xx".
If you have not installed your gateway, you can find the MAC address printed on the back of the gateway. Look for the 7-character code in the format "g: xx: xx: xx" (the last part of the gateway serial number in the 3rd line).