To upgrade to Shuffle you will need to log into your account at https://www.1QR.com
At this website select "Login" > put in your login credentials. You will then reach the card screen and at the top of the screen you will see "Get Shuffle" option.
This will need to be done through website at https://www.1QR.com
Also, check out our YouTube video on: How to Upgrade Your subscription to Shuffle