If things are hard to configure you pay to have them configured for you (or preconfigured)
It should be possible to change how something is used once you have begun using it. It should not be necessary for users to stipulate how they are going to use a piece of software before they have used it.
Ask questions and to see the parts of the system that aren't shown as part of a sales demonstration.
If you've built Windows Phone or Windows Store apps you can cross-promote them with AdDuplex to get more users.