Does this mess with DRM stuff? Or do they keep working because it’s the same hardware?

That’s the reason I don’t bulk upload books to my Kindle. Because I know I’ll be spending way too much time thinking about what to read next. Instead I only acquire books when I’m done reading one or close to it. And I only get more than one when they’re in a series.

Which part broke exactly? Because I can confirm the one on my tablet, which I installed a long time ago, still works. Haven’t installed it on my current phone which I got not too long ago, so I’m wondering if it’s gonna be a problem.

I still use rif. You can get the app as an apk, and patch it to replace the original API key with your own using something like vanced. I already had my key from before the debacle, not sure how you get one these days. Anyway, it did give me some trouble while logging in, but eventually it worked.