Shelly Plus 1 Mini - SW not working as expected

Hi,

Looking for some insight please, I am following this diagram to install a shelly 1 plus mini in a ceiling rose, the room has two lights both controlled at the same time by one of two switches. Once wired in the relay works and I am able to control the light, however the wall switches have no impact on the light fitting with the shelly - the other one responds as expected, the shelly switch input is marked as on regardless.

I appreciate there is some complexity with the dual switches, but given I am installing in the rose of just one of the lights I was under the impression it would not be impactful, any ideas what I am missing here?

I have tried all the switch setting combinations I can on the shelly itself, I would have expected 'edge switch' to be the correct setting.

I am in the UK with no neutral to switch.

Hi!

Thanks for getting back to me, it appears to be like like this (image borrow from internet)

To my mind it should be largely irrelevant given I am installing in the rose of one light fitting (I don't expect to be able to control both light fittings from the shelly, just the one!)

I have been staring at this long enough for my eyes to go crooked, however are they not two different illustrations of the same wiring?

Both are switching hot live for (SW), taking permanent live to the shelly (L&I) ,sharing a neutral (N), and the relay is switching live (O) I honestly cannot see the difference, are my old eyes failing me?

As a test I hooked the shelly L & N to the neutral and switched live in the rose, sure enough flicking the wall switch powers up/down the shelly as I would have expected this confirms to me that the wall switches work they way I have drawn and that the polarity is correct.

Could it be a software side thing, it's changed a bit since I last used it, do I need to setup up actions in order for it to do anything?