eufy Support | Troubleshooting & Customer Service

Wi-Fi connection issues during the setup process

Please note that a Wi-Fi network with a poor signal may cause the app to fail to detect the network.
The device cannot connect to your Wi-Fi network due to an incorrect password. Please check to make sure you have entered the correct Wi-Fi network password.
The device fails to connect to your Wi-Fi network due to an unstable Wi-Fi signal affecting the connection between the device and your home router. If the Wi-Fi signal is weak, one of the solutions is to strengthen the Wi-Fi signal to ensure a strong and stable Wi-Fi network connection.
Perform the setup process on a different smartphone.
Perform a hard reset on the device by pressing the "SYNC" button five times in a row, waiting for 30 seconds, and then pressing the "SYNC" button again to turn it on. After the device has been successfully reset, please start a new setup process.

If you have any further questions regarding the eufy Smart Lock C33, please don't hesitate to contact us for assistance.