I have connected the 3 gang switch as follows. First gang is free (Not connected to any load). Second gang to a fan (about 6-70watts load), and third gang to an led light (40 watts load).
It works normally. But when the fan is switched off(either by manual switch or wifi), the device goes offline and comes back online in 3-4 minutes. when fan starts no problems. Please see the video link.
Any help is appreciated.