I found out that the Divoom pixel editor prefers 32 x 32 images for import. The 64 x 64 image import leads to fuzzy pixels. Of course, for animation this isn’t a big deal, since sprites are often smaller than 32 x 32 pixels. And I can import 32 x 32 as 64 x 64 pixels if I don’t mind the fuzzies.

A pixel art depiction of a reddish creature with a long tail on a pink and yellow background.