Quit the creative cloud application manager and then sign back in. This can refresh things sometimes and make them right.
Nope, the same message. Cannot activate that Module of the LR5.
If you have an active creative cloud account, and it is paid current, then you will have to contact Adobe. There isn't anything I can do for you. I am just a user like yourself. Just keep drilling down on the provided link, and you will be able to start a chat session with an Adobe representative: