Daily APOD Wallpaper

Love it, but it doesn't like my lock screen ... I've been enjoying this app despite its insistence that I "wait 9 minutes" and have used it across many different devices ans versions, but it won't leave my lockscreen on this Samsung Note9 running Android10. It's been a couple of years. Is there a fix yet? [If I knew how to automate resetting the lock screen I just might settle for that, but that isn't really the right answer ...]

A rather complex app, which sadly has crucial shortcomings, for example: 1) Selects TODAY's image, with no fluid navigation to past days or weeks; 2) takes forever to load images of any other dates, with no hint or thumbnail to show WHAT it's going to be about; 3) there's no way you can read the full description of the image being visited, due to an obstructing dark rectangle at the bottom and the inability to scroll down; and 4) crashes often when trying to fetch past days. (Uninstalled)

Does what it says on the tin. It can be a struggle to convince phones by certain makers to keep the app running in the background to do its thing once a day but that's not the app's fault. Edit: previously had described a minor issue with the picture bring cropped but turns out that's also a MIUI issue, unrelated to this app.