You are unable to pair a shutter with your Link Advanced, and you are getting the following error message: "Radio range issue."
If you get this message, it means that your Link Advanced is positioned too far away from your IO/RTS equipment.
To pair it, you'll need to move the Link Advanced closer to your Somfy IO/RTS equipment.
However, take care to keep your Link Advanced in a centralized location so it doesn't lose communication with the Somfy Protect equipment.