Recovering old purchases.
I purchased TV Shows 12 years ago and want to redownload them. They do not show up in my purchased list inside of the iTunes store. I do see them in the iTunes View My Account > Purchase History > View All.
Click on this link and read how to 'Redownload apps, music, movies, TV shows, and books' - https://support.apple.com/HT201272
If there's an issue when you redownload apps, movies, or other content from Apple, click here --> https://support.apple.com/HT211842