I ordered an item of high value from a third party supplier on the Amazon platform. This was not covered by my prime account, so it was slightly cheaper. It was scheduled to be delivered by DPD on 21st/22nd guess what, it turned up on the 20th, but could not be delivered, because no delivery pin was sent. I contacted the supplier, who subsequently got DPD to supply a pin and it was scheduled for delivery on 21st between 16:00 and 17:00.
I checked around midday and the delivery had been cancelled, because DPD thought there had been a change of address requested, (that may have been a blind for the van breaking down). It is allegedly out for delivery today between 15:00 and 16:00, it will be interesting to see if it turns up.
As a point of interest Amazon didn't want to know about the delivery pin, saying it was a third party responsibility. Clearly the supplier did not know about DPD introducing this pin feature.