The "invalid user id" error means that you are using the hosted builder with the wrong user id. Under Tools - Build Server - Server Settings.
You should have received an email with the hosted builder id. Check it.
First of all, i am totally new to B4i (yesterday purchased license), second, I am not a professional APP developer. I am hobbyist. I was following video tutorial for B4i Certificate and Provision Profile. When i clicked Create New, a new messaged popped up as attached. I need suggestion on the...