I think I found the problem. I think it misbehaved because of an illegal character in the "HOSTNAME". Changed the hostname yesterday and It was still alive this morning even if I have not pinged it.
@Ikes-72000 If it were me having these problems, I'd simplify the situation by demounting the nRF board fromt he D1 Mini, then I'd power it, hook it up to a console and see whether I'm getting the count that it should be outputting. At that point what you have is simply a breakout board for the nRF, and it doesn't get any simpler than that.
I think these look very interesting to do with small children may be able to stimulate their curiosity, the current video games are too much influence on children, occasionally the family together to do their own small games is a new experience.
