I just bought a t.v series but didnt downloading them all. But I have now tried to download the other episodes and a message comes up "This computer is already associated with an apple ID. If you download past purchases" but I havnt downloaded them before

I just bought a t.v series but didnt downloading them all jut the first episode. But I have now tried to download the other episodes and a message comes up "This computer is already associated with an apple ID. If you download past purchases with your apple ID you cannot auto download or download past purchases with a different apple id for 90 days." but I havn't downloaded them before and the apple ID I have signed in with is my own?? Help I want to watch my tv series 😟