Q: After the first creation of simple products at 1 configurable product all is ok, But at the second it does not create but simply connects the simple products of the first product. This it does with all the creation after the second one.
What can I do?
A: Extension checks if there is at least one generated product available and stop's working.
In order to make it work again you need to create a conf. product based on another attribute set. (Fixed since version 2.0.0)