Oh, is that also your account? no wonder I couldn't find any downloads under your username.
anyway, in the Jaman player, login into the account with which you downloaded the film. Then click on 'tools' at the top of the player and click "authorize playback." This will connect your account to the computer you are currently using.
then, in the Library tab, right click on the film you are trying to watch, and click "resume import," which will download the proper license for playback.
As it looks like you were renting the films, your rentals have expired by now and you'll need to rent them again.