I have been playing with my home automation system and need to reset
several smart lamps to be able to (re)connect them. They have been
working to this same system (so they do work etc) but I need to
re-connect them but can't seem to get them back into re-pairing mode.
;-(

The process used for most of these 'smart' lamps id to power cycle
them a certain number of times and then end up with them on, when they
will flash or 'throb' (bright / dim) indicating they are in 'pairing
mode' and are then normally picked up ok.

I have a quantity of lamps from Lidl (Livarnolux brand) Model No
HG06492C and I now can't get any of them to go into reset mode, no
matter how many times / ways I try so I'm either doing it wrong or
it's working ... but not indicating for some reason (I've tried paring
them at that point but still nothing)?

https://www.lidl-service.com/static/...4392_NI_EN.pdf

Which states: (p18):

" Resetting product manually

1 . Light switch on/off 3 times