I am trying to use this program to share a few files with about 15 people. When I signed up it said for the free version there is unlimited users.  However, once I started using the product it says I can only have up to 10 users.  Can you shed some light on the discrepancies here? If I can only have 10 users this is quite disappointing and misleading. I already took the time to do up the documents I wish to share.