... but you came across a little condescending...
Hey LP, Burkhard is all-class, man. This guy's patient and committed. Best to allow for subtle language-barrier differences when judging the tone of his posts; he definitely means well and wants only the best for us and the Kemper.
We hope, that the new Master Volume screen introduced in 5.3.0/5.3.1 makes visible, what is going on.
The team responded very-quickly to our feedback to the previous beta with regard to this issue, it would seem. Kudos to the team, and thank you Burkhard!