@Wilsin 

Can you share more details of your case here? For example, which door lock do you have? What's its hardware and firmware version? Did you receive any errors? What troubleshooting steps have you tried?

Here are a few things you can try:

• Disable and re-enable Bluetooth on your phone.
• Restart the phone.
• Move closer to the door lock and try again.
• Test with another phone: Log into the Tapo app on a different phone to see if Bluetooth control works there.