@aspik your last changes are not correct in this way.
You need to load the settings via SettingsManager to apply the stored values from config. In fact you have now used just the initialization defaults and would not see user changes.
Yes, I know, I realized it today morning (see my previous post).
I'll remove the static default class and write the default values into the properties, like it is done in other settings. Then I can load it via SettignsManager in the WASAPI class. I'll do it tonight. Sorry for that and thanks for your attention!