apple tv does not give me the full season of a show after purchase

Hello, i just bought the amazing world of gumball season 3 on apple tv. I watched it and there were no more episodes available of season 3 but there are more episodes in apple tv‘s episode list. It only gave me around 1/3 of the entire season 3 and after I watched that part it wanted me to buy season 3 again but i already did. Why does it not give me all of season 3? I live in germany if that helps somehow, thanks in regard