That’s strange—are you sure you configured the app correctly? Sometimes the settings can be a bit finicky. I’ve run into similar issues myself, though it often depends on the sources used for the images. Have you tried checking if it happens with other albums?

The Android app has been downloading completely random images for album covers. Not even pictures of the artist or the wrong side of a CD or something as sometimes happens, it's just completely 100% random images. I told it to search for an album cover and it downloaded a random picture of a couple of women. Then it downloaded what appears to be a infographic for glaucoma in Spanish. I can clear it and tell it to search again and it just keeps pulling the most random pictures.