Chamberlain's myQ Smart Hub (Smart Garage Control) is commonly added to an existing garage door opener to enable app control, status alerts, and automation. Reported "sensor misalignment/sync" problems often come down to physical placement (sensor line-of-sight or vibration), weak batteries in the door sensor, or Wi-Fi signal issues in the garage.
Repair is usually a low-effort troubleshooting exercise: remount and realign the sensor, replace sensor batteries, ensure the hub has stable power, and improve Wi-Fi coverage. Because the device is inexpensive, component-level repair isn't typically economical if the radio module is failing or the hub can't stay paired.
Replace is the rational choice once you've confirmed alignment and power are good but the hub still drops offline, especially if reliability matters for deliveries or security routines. If time spent exceeds the very low threshold, swapping the unit is usually the best path.