When an overflow happens, all other pages in your document (not just the overflow page) is repeated. In order to prevent this, all you need to do is to add a condition on those pages (Statement 1, in this case) that hides them when within an overflow. This condition is:
Just add this in the "Conditions" box of Statement 1.
As for your extra blank page, it seems to me like it's iterating over an empty line, perhaps. This is a little harder to guess, perhaps you can try to put a condition in the "Iteration Condition" box in your overflow setup and see if this resolves it (check if a certain place is empty, if you have any where there is always data).
Objectif Lune Montreal