Wikimedia Commons: People want to delete microG screenshots due to being derivative works (licensing/copyright issues)

These images are up-for-debate for deletion:

• https://commons.wikimedia.org/wiki/File:MicroG_Einstellungen_Hauptbildschirm.png
  discussion: https://commons.wikimedia.org/wiki/Commons:Deletion_requests/File:MicroG_Einstellungen_Hauptbildschirm.png
• https://commons.wikimedia.org/wiki/File:MicroG_Selbstpr%C3%BCfung.png
  discussion: https://commons.wikimedia.org/wiki/Commons:Deletion_requests/File:MicroG_Selbstpr%C3%BCfung.png

Apparently I uploaded these images (as CC0) and so I got the notification.
AFAIK/what the page shows the images are not used in Wikipedia articles, but well.

The claim is:

screenshots are derivative works not own work

I am not sure legally about that, but if @mar-v-in just got a permission to use the screenshot of an app(?) then maybe that helps?
Otherwise, does that imply/mean the images are now licensed under the Apache2 license?
Also never heard that I cannot do screenshots and use them even of proprietary software? (But maybe that's just citation rights then.)

Start with the two linked Wikimedia Commons deletion discussions and the repository's Apache-2.0 license information. Determine whether the screenshots' licensing or derivative-work status can be resolved from the available project and Commons context. Done means the issue has a documented, agreed resolution for the two images.