Thanks for the update and advice, Henrik.
However, I have to say that I already did this and it did not really help. Because: the config help the ISE software provides manipulates the bind files directly (but who am I telling this 🙂 ). When I start ED, it will read the bindings from my current user, not from the manipulated files under the admin account.
I tried copying the manipulated bind file from my admin to the user account. But then they were not writable anymore, and I couldn’t change any further settings in game. I checked access rights of the bind file, but were not able to identify the issue.
You see, he issue does not end there, sorry. I would not recommend your last post as a fix.