If you're running into problems with the QR code scanner then here are the following steps that we recommend:
If you have an iPhone, we would recommend using the QR code reader app: QR code or QR scanner.
If you have an Android phone, we'd recommend using the app: Lightning QR Scanner. It could be downloaded here:
apps/details?id=com. application_4u.qrcode.barcode. scanner.reader.flashlight&hl= en_GB
On the other hand, if you happen to have a WeChat account, it has a pretty solid QR scanner too.
When you are scanning the QR code, it is recommended to try and zoom in, zoom out, and adjust the angle, so the QR code reader will work better. Please note that the lightning will also influence how well your phone can read the QR code.
We hope this is helpful!