Most likely the Gyre you just got is already paired with another ICV6. You will need to reset the controller first in order to connect it to your ICV6 module.
To reset the controller on the pump, please do:
1. Unplug the controller from power
2. Press and hold the center dial and connect the controller back to power. This will allow you to access the System Setup screen.
3. Rotate the dial to Option 2 "Reset"
4. Go ahead and try to add the gyre to the app again