If you get this alarm and are not able to visit your FeedCon, wait 24 hours. If you have not received a new sync after that, you may need to visit your FeedCon and restart it. Verify that the green LED flashes on the box after restarting. If not, the box may be damaged / defective and need to be replaced.
If the error is frequent or not resolved by the above, contact Nordic Gamekeepers support.