I can not install apk instructor.
F-Droid is not providing any install/uninstall button at the top.
If I look at the different versions, I can update, install or downgrade one.
That means f-droid thinks, there is another version if the apk already installed?
I have apk extractor not installed and it (as far as I know) never was.
Why f-droid does not offer an installation?
Device has android 7.0.