Allright, I have replaced the nrf chips to those with + and... that was it, everything is working very well now
Here they are, freshly handmade
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RE: livolo Glass Panel Touch Light Wall Switch + arduino 433Mhz
@Nca78 The euro version doesn't. Just the ULN2003A.
Unfortunately, I can't attach images for some unknown reason.
That's a single button switch.