Hi António,
thank you very much for your feedback.
Regarding your suggestion, next version you will have that fixed. It will be something like, when changing the Environment dropdown, if the url of that environment is not configured, you'll get this:
As you can see it's already implemented on my side :)
I'll try to add this version tomorrow, or next Friday, because aside from adding this fix, I want to add more new stuff.
Again, thank you and keep the errors coming.
Nelson Freitas