AH! I might be experiencing the same problem.
It shows ; Mon 27 Oct . 3:38pm . Parcel Received in Hub and posted to buyer on the eBAy tracker, but nothing more - not even "out for delivery yet ,and it's now nearly 3 weeks since it was posted (UK to IE).
However the Buyer has NOT opened any query nor contacted me for non delivery (although i think that with this new Simple Delivery / GSP you do not get any direct correspondence in the instance of dispute, only notified byeBay that there was a Refund or such.. Would that be right?