Diagnosis
The sock is not paired or communicating with the base station. This is a disrupted hardware handshake.
How to Fix It
Perform a factory reset on the sock. Hold the small reset button on the side of the sock for 15 seconds until the green light flashes rapidly. The base station will show a pairing mode message. Open the Owlet app. Navigate to Devices > Add New Device. Follow the on-screen prompts exactly. The base station light must be solid blue to proceed.
If That Didn't Work
Check the placement of the base station. It must be within 3 feet of the Dream Sock and on the same level, with no large obstructions. Ensure the Dream Sock is powered off during the base station pairing process. Power cycle both the Dream Sock and the base station simultaneously.
Heads Up
After any firmware update, the sock may require a re-pairing sequence. Do not skip the app's guided setup; manually forcing the sock on will bypass the required Bluetooth Low Energy link.