If you can get access to the exhibitionist page, you made the right payment.
This is a funding event so nothing is released yet. All the pages will quickly get updated as the development progress.
At the moment, what is sure is that the month after the end of the funding event we will release the first demos.
Sadly if you thought the game was already complete, you'll have to wait 15-20 days before hoping for a refund as It is how long It takes for us to receive your payment and then manually send it back to you.
Please before donating anywhere, read the description of the donation event before making your choice. As your donating money, we should be in no obligation of refunding you.