Hello ALL,
great Forum!
SO, multiple RGBW2 installed with no issues. On two cases i'm struggling a lot and cannot understand how is that possible.
Case 1: RGBW Strip 5M
I built a screen wall and the strip is the same BFT model i sued in another room. But I find the shelly behave strange as it light up and few second goes down, to start again. The consumption is not a lot, tag 100W/120W on the BFT label, but not even that huge, power is 150W alone.
Only thing i consider to check is that i connected both Head and TAIL of the LED, is that possibly an issue on such short strip?
For the other RGBW alone, I v'e used it as per schema without any issue, only connected on the head.
Case2: W Strip 3M
I have a square on the ceiling with two strip 1.5M each, connected to the same shelly at channel W and channel B. Well, it is working normally, but at certain point, very randomly, it shows on the APP the channel 1,2 are up with 30W consumption and 3, 4 power on with NO consumption.
I turn off all, and after few time, powered on again!!!
Strangely also i cannot completely deactivate channel 3 and 4 which are not connected at all.
For the other Shelly I've always used this method: 1 strip only, connected to W (channel 4). If i have multi strip to the same shelly, going up to BLUE (channel3) GREEN (channel2) and RED (channel1).
But i cannot deactivate the other not connected. 
Any clue on this?
Thank you so much
Michele