This project is now a business seeking outside funding and should be conducted as such. There are no excuses and perception is everything. Instead of an itemized (note: this projects as petty) response, you need to fix it and say "thank you" to sillysaurus for the valuable input.
You've since added $1 minimum contributions. Awesome! What does that person get? An honorable mention? Their name on the 'Founder's List'? There's nothing in the tier descriptions...
The overall message is still unclear. How does Johnny MacBook benefit from all of your hard work? What is the point?
I want this project to succeed, and that is where the feedback comes from. It's obvious to me and everyone else here that you've put a lot of time and effort into this project. Please don't make the mistake of thinking that it's enough to build it. If they don't know what it is and what it does for them, they won't come.