Unable to add iOS device using QR code

Hello,

I just signed up for an account. I am trying to enroll iPads into my account but when I scan the QR code using the iPad camera all it does is a search online and it opens up a browser with random stuff. I made sure the Prey app is installed already but have not signed into the app. Please let me know how I can resolve this. I have a lot of iPads to enroll