Went two days and then no longer certified

Have the Dock uses two days with my iphone 6 and now today came the error message that the dock is not certified. Since I wanted to exclude all mistakes I have reinstalled iTunes and also launched the iPhone several times. Unfortunately, without success, it is no longer loaded and no longer synchronization between. Did it even tried it with my old iPhone 5s with the same error message.
It may be that it works again sometime after an update or the like. However, I would like a dock, which I can use everyday and not, perhaps, or only sometimes.
I can only advise against the purchase. It's amazing that this Apple Dock also sells via its own store, although the hardware is not certified. Something like that does not exist in the Androidwelt! I hope Apple is its accessories policy rethink again sometime rather than annoy the customer.