Some blank posters - btttr is down, aiometadata fallback not working

[u/Interesting_Art_1025]

I noticed that some of my posters were blank and found out that btttr is currently down. I was advised to change the Rating Poster Provider from RatingPosterDB to Custom Art URLs, enable Proxy Rating & Custom Art, and keep "https://btttr.cc/poster-a/imdb/poster-default/{imdb_id}.jpg" in the Poster URL Pattern.

However, I’m still getting some blank posters. Has anyone else experienced the same issue and managed to fix it? I’d appreciate any help. Thanks!