Actually it is all about the our tool recognition.
After you registered your tool in our site in your computer webbrowser, your DS708 does not know what happened in our server, so it will keep on thinking it is not registered. So you need to get an authorization from our server to the card.
Just load the card to your computer.
Run PC SUIT V6.17 (always make sure you download the latest version from our site, also the correct version).
Then you will get an authozation from our server.
Done.
You don't need to delete all files in your card.