Automatically reload device

I have 2 Openmediavault servers on my system and have added the OMV addon for both in HA. I don’t know why, but one of the servers entities will all show as ‘unavailable’ until I reload the device. The server is running fine, but for whatever reason the addon stops.

Anyway, I’m looking for a way to automatically reload the addon if it sees ‘unavailable’ in one of its entities. I’m not sure what to put in the conditions, though.