May I ask what license your app falls under? Without a proper license, it's not "free" (but means "all rights reserved"), which raises uncertainty for those who want to use the app or even contribute. If you're unsure, Codeberg has a nice article explaining it with easy terms, so you don't have to dive the jungle yourself.

I've just rolled back the update in my repo and disabled future updates, as the current version adds a couple of non-free dependencies and trackers: Crashlytics, Firebase Analytics, Firebase… Can you please check and make sure they do not pop in again?

Offending libs:
---------------
* Crashlytics (/com/crashlytics): Tracking
* Firebase Data Transport (/com/google/android/datatransport): NonFreeNet
* Google Mobile Services (/com/google/android/gms): NonFreeDep
* Firebase (/com/google/firebase): NonFreeNet,NonFreeDep
* Firebase Analytics (/com/google/firebase/analytics): Tracking

5 offenders.

Looks like they were intentionally added with commit 8a594d279cfcf2ca7c306ce5b7742a56d6dacd2e (I thought some other lib might have dragged them in). If you really want that for potential releases to Google Play, please consider establishing build flavors (and providing tthe FOSS APK). If it's rather that you need some analytics, you might wish to take a look at this snippet where I list some potential candidates (which are also acceptable by F-Droid).

Please let me know when a fixed version is available again, so I can re-enable updates. Thanks for taking care!