DO NOT use any browser other than Chrome or Microsoft Edge.
For Android users whose camera app on your phone/tablet does not support QR code scanning, download a third-party QR code scanner app such as Barcode Scanner and Trend Micro™ QR Scanner at Google Play.
3-1. Click on the link shown upon scanning the QR code
3-2. Then select Chrome to open it.
3-3. Allow access to the camera.