1. Please Put Robot near Wi-Fi Router.
2. Make sure your mobile phone is connecting with 2.4GHz Wi-Fi.
3. If your router is 2.4GHz and 5GHz Dual band, please connect your mobile phone with 2.4GHz Wi-Fi.
4. In your router, if 2.4GHz and 5GHz Wi-Fi use same Wi-Fi name, please enter router control page to rename 2.4GHz Wi-Fi with new Wi-Fi name.
Then make your mobile phone to connect with this new name 2.4GHz Wi-Fi.
5. Please make sure Bluetooth switch on your mobile phone or tablet is ON.
6. Please reset Wi-Fi and download the latest Tuya Smart App to retry connecting.
Model: L9000/L8000