For a long time, I've been ignoring how outdated the platform of Admin4 V2 was. With recent PostgreSQL versions, this gets very obvious, especially concerning the SSL library of Python 2.7. So I'm grabbing some time now to update Admin4 to Python 3 with the latest wxPython 4.1 version.
In addition, I'm planning to assign a decent LetsEncrypt certificate to this website, which will break the update mechanism of V2 (it relies on a pinned certificate). So if the update grumbles about problems reaching the update site, this is the reason.
Very soon, I'll pushing new stuff to https://github.com/andreas-p/admin4/ , restoring all features on recent platforms.
Stay tuned!