Regarding my previous post with an error while trying to create a round corner for a kind of dome, yes, I tried much bigger values for the offset but it was the same problem, nothing happened when I click generate.
I figured out that the culprit was the arcs at the base of the geometry. If I replace the arcs by straight lines, the plugin can generate something. I understand how it could be challenging for a plugin to generate rounded corners when you have a circle or arc at the base. And if the arc is converted to successive small lines, it's even more challenging and it will push you to have a very small offset.
So I will most likely stay with straight lines at the base. My question becomes more now: is there a way to have different offset for different lines during the same single rounded corner generation. Because you might want to have two different values for 3 lines that intersect so I don't think that you can do it sequentially.