We completed everything months ago, including payment method and photos, and got Green Line status. We're sailing in 2 days and now, like Amanda, the QR code tells us (in green print) to proceed to the Blue Line, which I'm sure it didn't before. Underneath the QR code it's still showing the Green Lane status. A couple of days ago, I had an email from Princess about boarding and things to do at least 24 hours before you sail, one of which was signing the passenger contract. As there's no contract to be found on the app, that's rather difficult. Perhaps that's what triggered the Blue Line. Being Platinum, I'm used to getting expedited boarding, so if there are lines I shall just go to the Green one, show the Green status on the app and see what happens.