@Sebulon, firstly all great feedback.
On Issue 2, I think what is happening is that you are saving your midi assignments per preset. If you open up the bottom panel “control” you will see an entry in the table for each midi assignment. If you select “Global”, it will save the assignments across all presets. Can you check if this works ok for you.
On Issue 3, yes there is a hiss that we have in the demo version, we’re going to add this to the demo restrictions window that appears on launch, you’re not the first to ask about this!
You’re posting in the correct forum! Looking forward to hearing how you get on.