In addition to everyone else's wise words: don't try to eat the whole elephant at once. It seems you have tried to solve every problem that freelancer might have, instead of a crisp, well-defined one. The result being, you have created something that is hard to sell because very few people want a drastic overhaul of their workflow. No one wants to replace Skype, an Invoicing software, Squarespace with a software that has just been launched.

A product can be bad for hundreds of reasons, which also includes, as I can see it here, doing too much, having no focus, and communicating the benefits poorly.