Thanks for the correction, Shaun. In that case, you guys should update your Store page for the data subscriptions. There is no mention made that the base subscription covers two devices. Instead, there is this statement that refers to "device" (singular): "This purchase allows you to download updates to your device...", and a follow-on statement that implies that anything more than one device requires the multi-platform upgrade: "Do you have multiple devices? Select the "Multi-Platform Upgrade" option! Then you can share this subscription across 4iFly units, iPads or Android devices. "
Perhaps a change to: "This purchase allows you to download updates to up to two devices..." and "Do you have more than two devices? Select..."