This can happen if you accept an invitation before updating the Embr Wave app to 1.60 or newer. (How can I check what firmware or app version my Wave is using?)
WHAT TO DO:
- Visit the App Store (for iOS devices) or Play Store (for Android devices) to update the app.
- You'll then need to go back to the original invitation and click on it again to accept it and add that person to your Embrace friends list.