DLC installation problem (ps3)

Good day.

(I'm truly sorry for all my mistakes, for English isn't my native language.)

I've been trying to solve the problem for hours now. Unfortunately, I'm not really successful.

I have Dragon Age 2 disk, and I've played the game 2 times now. I bought DLC (Legacy, Mark of the Assassin, Exiled Prince) on Sony Entertainment Network. When I open Dragon Age 2 menu and click on "Downloadable Content" it writes that I have no content currently installed. If I click "View Available Content", I can download all these DLS, and I've done that several times now. Also, I tried to manually place these DLC in the download queue from my computer. In both cases, I waited for downloading and installation process to end (it was shown to be successful). Unfortunately, I still have "There is no downloadable content" message once I open my "Downloadable Content" at DA2 menu. It seems that I can't activate these DLC from the game either.

Is there some way to deal with the problem? To tell the truth, I'm really tired of trying to download those things.

I also turned my PS3 off and on, restarted the game and searched for updates (no updates available).

I'll be really thankful to anyone who help me with this problem 😕mileyhappy: