Yesterday it became clear that there were problems playing the new Apex Expansion pack that was released yesterday for Driveclub.
Although a first it seemed the issue could be fixed rather easily, EU players are still not able to play the expansion. While it is possible to download the expansion pack, the Playstation store team is still working on a possible fix to actually play it.
APEX EU Store Update - The PlayStation Store team have now fixed the problem. In game just re-download the pack.