I thought I would give qgvdial a try for once.
The entry fields aren't too obvious. I thought they were just labels at first. Once I realized they weren't I wasnt too sure of my clicks were working and I could start editing. Part of that is that the sizing is unclear.
It might reduce clutter on the main screen if the settings were all on one screen. From that screen is probably where I would put the debug link.
There should either be in-app help or a link about setting up mosquitto in the mosquitto settings screen.
How do I actually view the inbox or make calls within qgvdial? It just sits at the screen I've been talking about with no obvious button to go to an inbox or dialpad or anything.