The problem with “org” part. We’ll never have org.gnome and com.gnome packages. Some apps have io.github.foo.bar. This entire thing is also case sensitive, so I have to guess is org.gnome.epiphany right name or org.gnome.Epiphany.

Most of subreddit admins and mods are not interested in migrating to somewhere else. A few months after API changes Reddit is still usable and active. Even third party apps are functioning if you apply a patch with your developer token. Also mods don’t want to lose their power.

If you really want to bring more official communities here, you should ask admins who are already interested in open-source or Fediverse. For example, I found that people behind Fossify (a Simple Mobile Tools fork) had created a subreddit. Ask them about Lemmy. It’s FOSS-friendly, there are a lot of fans here, so the chances that they’ll make and promote a Lemmy community are much higher.

Are you trying to install an update from GitHub to F-Droid app? This will not work because F-Droid apps built with different signature. You should uninstall F-Droid app in order to install updates from GitHub or Play Store. Or you can add source from F-Droid to keep updating app from there.