At least one priority contact must be added so that a helper can launch an automatic call chain to the carers.
You can also consult an explanatory tutorial directly in the Homelinks application in the Help / View Help section. The video is entitled: Save call order for priority contacts.

This message tells you that no priority contact has been able to take your call. It will be possible to restart the automatic call chain or to modify your priority contacts by the person being helped or by the supervising carer.