Hello Harold,
You are absolutely right, and I do agree with you that the situation cannot continue like this for much longer.
We happen to be working on PCBs that have 12 layers with a thickness of 0.8 mm, and even for the best PCB manufacturers (which we cannot find in the US neither in France !), this can sometimes be complicated.
The problem has been resolved by our supplier, but it is absolutely true that we did not anticipate this problem, including its consequences in terms of having to reprogram chips.
I apologize once again for the delay, and I would just like to remind you that the idea for this product came from a request made here. Perhaps I shouldn't have taken the risk ? In any case, I promise that no customer has been or will be disadvantaged.