I bought the plugin "fold it" - great thing by the way.... but I have some troubles using it

I hope the attachment works. Sometimes - like in the example - the Function "Make joints" does not always connect the bone to the object (in my example left-1 and left-2).
And I really do not know how to solve the next "problem" - as you can see in my example (I try folding a paper quite complex) there comes up trouble with overlaps. Difficult to explain - i attach a Screenshot too. The final state of the animation should be a simple rectangle. May you can guess what I mean by moving the Timeline. Sorry for that bad english.
May someone can help me??

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