I’m frustrated

Help please

I download the trial version of Nero 2015, spent about 6 hours of video editing, then it said it will only allow me to export 3 minutes of it, unless I buy the program. At this point, I'm very upset that this wasn't explain before I have spent 6 hours on this but I decided that I might need to uses it later on, so I bought the 2014 version since that one have greater reviews. But alas, again, no where does it inform me that I can't open 2015 project on 2014 so that's nice. All I wanted was to was create a professional funeral video in memory of my deceased grandma but all I got was frustration and a useless product.
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