Thanks everyone for the testing and feedback!
In the last year my work/life situation did not leave me with much time and energy to work on the PE, and now it is clear that I won't have much in the future either. So I think it is time to thank everyone for their help. I've seen there have been other developments and the community is still ongoing, which is nice, as the PE is a very neat device.
If anybody wants to take over maintenance of the Golden Allmine, please feel free to do so (adding the fix to use other apps in the e-ink screen would be nice). I don't think I'll be reading the forum often, but you can contact me using my nickname as email address at the gmail.com domain.
Thanks again to everyone, and I am glad that my little project was useful to other people (I still have it in my seldom used PE