1. Check the status of your smartphone's network, Bluetooth and Location Service. Please turn on your smartphone's network, and make sure that both Bluetooth and Location Service have been authorized for the SwitchBot App on your cellphone. Only when those two options are enabled can the SwitchBot Curtain be detected.
2. If you have a SwitchBot Hub Mini/Plus, check the Hub Mini/Plus network status. If the Hub Mini/Plus is offline, make sure it is online.
3. If the Curtain is out of the control range of your smartphone or the Hub Mini/Plus, bring your smartphone or the Hub Mini/Plus closer to the Curtain and operate again.