Let's Control It

Hi,
last days i install ESP Easy at Sonoff s20 device.
Works great ... so far.
The S20 device has a local button to switch power on/off directly. It use a rule to switch the relay if the button is pressed.
If i disable WLAN, the system is not usable. The local switch don't work any more.
I this OK or do i something wrong?

Would be great to use this device without WLAN too.

The new S20 device with current software mostly don't have this problem.
Seems the MQTT connection is the source of the problem.
With current firmware i have to wait some seconds and the switch is working without WLAN too.