The multiple devices out of sync error will typically occur when the Tracker Freedom devices have a low battery. When the battery becomes discharged, the devices do not have enough power to maintain a strong connection with tracker and the order in which Tracker receives data from the devices can become "Out of Sync."
To begin testing immediately:
To help prevent this in the future:
If these steps don't resolve the issue or if the issue persists, please contact JTECH Medical’s Customer Service.