If the indictor doesn't flashing when you plug in the tantan plug for first connection, please hold a 5-10 seconds press on the button of the smart plug see if it's start flashing;
If the smart device can't be connected to WiFi, please long press ON/OFF button for 5~10 seconds to reset the smart plug;
The smart device only work with 2.4 GHz network. If your router broadcasts both 2.4 and 5GHz, please selected the 2.4GHz network with the app. If connection still failed,we recommend you call your ISP and had them completely shut off the 5 GHz network on the router; You are free to change the network to 5 GHz again after connecting;
Please try to make the smart plug and router as close as possible when first connection, you can change the place after connecting successfully.