I set my watchlist order to sort by release date everytime i open it but when i refresh it, it goes back to sort by list order. And when i check my watchlist's settings, there are only 2 options for sort by. Which are list order and date added. How can i fix this?
There's no such feature as "setting" the sort preference on a list at the moment.
My best advice is to Bookmark (or Favorite) your preferred view of Watchlist, and access it with your browser bookmark each time.
With custom lists (other than Watchlist, Checkins, Ratings (which isn't really a list)), you have the additional option of creating a link within the list description to click once you get to the list. I do this a lot, because my Refine/Sort preferences take a lot of clicks. To see how to create a link in a description, see this Help article: https://help.imdb.com/article/imdb/track-movies-tv/how-do-i-create-a-link-in-one-of-my-descriptions/...#