To correct the clock in the sign: 
1. Connect sign with Wi-Fi
2. Open APP
3. Click "Devices" - "Time" - "OK"

To setup a timer switch
1. Connect sign with Wi-Fi
2. Open APP
3. Click "Devices" - "Time Switch" - "Enable"
4. Set the on and off time
5. Click OK
Caution: Has to correct the clock first