Life is Strange more episodes unavailable?

I got the Limited Edition (LiS & Before the Storm) for the PS4 from my brother and put in the CD and played happily (I played the prequel first), now I've started LiS and the first episode through.

Now it says that I should install the other episodes and if I go to the episode menu is there "soon available" (although the game is old and all episodes are out?).

I have nothing to do with Steam, I had Steam, but I forgot my credentials, and the game was bought in the store, not on Steam. Now I have a Playstation Network account increased, hoping to meet there answers, only there's a paid offer with Playstation Plus (?), I just want to play only my game, which is already purchased. Or do I still have to buy each episode separately? -.

Could it be that you only played the free episode of LIS?

I've looked again, and it looks like you could look with this package only briefly at LiS 1 (aka only the first Ep. Play). Then I have to get it separately. ¯ \ _ (ッ) _ / ¯

Give it a try: Go to the game in your library, go to DLCs (or add-ons) and see if you can install it from there.