This was the solution. Permission for firefox were set to “Home screen shortcuts” disabled. Once enabled, installation worked. Thanks for the hint.

This might be the case here. My Phone has MIUI 12.1.1. One more reason to take the step to install an open ROM.

Is there already a workaround for installing Wefwef on MIUI?

Updated Jerboa. Thanks for your efforts, transparency and insights.

Weiß gar nicht was du hast? Ich sehe hier nur einen englischen Kommentar und der ist ein Meme.

Took me a while to see it. There are little owls around the neck. Nice pattern and we’ll done.

I just deleted my account on Reddit. This behavior is not acceptable anymore at all. Sorry for what happened to you, this must feel disappointing and betraying having put so much of yourself into the platform that simply kicked your out of the door.