Hello Tomaso,
When you go here https://www.dhl.com/global-en/home/tracking/tracking-parcel.html?submit=1&tracking-id=CR071950896DE , click on “All Shipping Updates” and expand the menu. If you check the date, you’ll see that they are reusing tracking numbers (it’s a common issue which was discussed a lot in the forum). I’m also one of those backers with reused tracking number and although I’m in Bulgaria, the site shows it was delivered mid May in Portugal, BUT there is a new status from 31st of May, that the shipping data is given to DHL electronically.
The way it works is that you won’t see any changes to the status until the goods are actually received from DHL. For Europe, the shipping goes through German customs and after they release the parcels, DHL picks them up and then you will see a shipping update.
Not to worry, but make sure to read the News section and follow this thread General info about shipment and manufacturing cause everything is there, just have to scroll a bit and read.