In the beginning, you could see one movie per day which was great, but you couldn't share the account with your spouse, you couldn't use multiple devices, and you couldn't see the same movie twice if I am remembering correctly. And that was when it was $30/month (albeit a cheap price if able to take true advantage of the movie-watching).
And now they're changing the terms, seemingly on a weekly basis.
It has been a complete failure throughout its run. It's time for MoviePass to go away.