Here are some reasons why a QR code is not working on Android devices: Your Android device isn't running Android 9 or higher. If your device can't run Android 9 or higher, you can download a third-party app to scan QR codes. You can also check and update your Android version.22 Jan 2021
Why does my QR code say invalid?
If you scan the QR code on your Circle Home Plus and get an error saying it is invalid, it's possible the QR code was scanned previously by someone in your home or by yourself on another account, the device was used, or there is an issue with the QR code.
How do I make my QR code work?
On your compatible Android phone or tablet, open the built-in camera app. Point the camera at the QR code. Tap the banner that appears on your Android phone or tablet. Follow the instructions on the screen to finish signing in.
Why can't I scan a QR code on my Iphone?
Head to Settings, then Camera. Make sure Scan QR Codes is enabled (and it should be on by default). QR codes won't scan? Make sure it's enabled in your Camera settings.4 Jul 2018