Recording

I had an extremely important interview, because I am creating a documentary. Is there a recording limit which I did not know of for a basic account, because we needed 4 meetings to cover all the topics, and the 3rd meeting was only partly recorded, while the 4th was not recorded at all. If there is a recording limit, is it possible to still save the unsaved recordings. I would pay for those, as it was an extremely important interview.