Anyone Showing on the DCS site as Claim Documents Received?

Through their DCS log in, is anyone seeing an acknowledgement of their claim documents being received? I know it says on the site that they are logging them but I sent mine on 10th June (and to the previous PO Box address given - which they said is still valid for UK mailings) and still don't see any sign of receipt of signed documents.

Not panicking as there's still plenty time to re-send but if, as they stated on the website, they won't look for individual claims, I just wondered how any other claimants were placed?