This is what you get when you deal with Digital.

Warner Bros had a fight with Apple over resolution and price and have joined to rebel Disney faction (no 4K without $25)

Apple wants all movies priced 19.99 no matter the resolution, while Disney and now Warner Bros want 24.99 for 4K and 19.99 for HD

Yesterday a large sum of WB movies got downgraded from 4K to 1080p (even to those who purchased it as 4k at iTunes)

I've personally had few movies downgraded as well, but luckily I buy 4k movies at retailers that have agreement with Disney to sell for $24
therefore my digital content remained 4k on other MoviesAnywhere linked stores like (Amazon, Microsoft Movies) etc..

Digital Isn't safe even if you buy to own.

I am switching to blu-rays fuck digital! I'll re-buy few favorites I already have in digital and keep collecting in 4k UHD and Bluray, at least
I know they won't downgrade my 4k bluray to 360p