I just installed a new 4ch pro rev2 and have All on and All off showing on Ewelink.
I plugged in a 4ch pro rev2 I bought a few months ago and it doesn't have the All On or All Off buttons.
Both are showing as having firmware 3.3.0 and PSF-B04-GL.
I have ewelink 3.14.1 on iPhone7.
Anyone have any suggestions to add the missing functions or are there hardware differences?