Paired Bike Computer cannot reconnect to Onelapfit App after reboot

Check Bluetooth status: Ensure the phone's Bluetooth is enabled. Restart Bluetooth.
Restart device and app: Power off the bike computer, fully close the Onelapfit App, and reopen it.
Re-pair: If ineffective, unpair the bike computer in Onelapfit App, "Forget the device" in the phone's Bluetooth settings, then re-pair.