To restart the map application from the LARDIS interface, long press on the "gear icon" and open the "Device settings". In the following, open the "Apps" and look for the "LARDIS" entry. Under this item, switch to "Permissions" -> "Additional permissions". Remove the check mark for "Access Garmin fleet API functions" and then set it back to Active.
After leaving the settings, the map application can be started again.