I just saw your review that you left about a month ago (I never saw any notification that the game had gotten a review, so I must have missed it) and seeing as I have no way to directly contact you or reply to that review, I wanted to post here in the hopes that you see this.
First of all, I apologize for the inconvenience of the situation. It was my understanding that once you claimed the game, you would thus "own" it and it would be available to you regardless of whether or not prices changed in the future. Judging by your frustration in the review you left it seems that was not how it worked, and you lost access to it instead. That was never my intention, so I'm glad you let me know about it in some way at least.
If it helps and you're still interested, you can claim the game for free again until March 31st 2020 as part of the current sale. In the event you happen to see this after the current promotional sale period is over, reach out to me again here in a reply comment and I will try to help.
For clarity purposes I'd just like to add that this game actually started out as paid game with a $5 minimum price, and the demo version was released back during the game's original release as well, and it was only later on that it was moved to a Pay-What-You-Want setup with the demo temporarily removed for a time, as something of an experiment on my part to see if it caught more peoples attention.
At any rate, allow me again to apologize, as I did not know that sort of thing was happening, and to thank you for giving the game a try when you did. I do appreciate everyone who plays the game I spent almost 2 years creating, even if they end up disliking it, that's okay too. I'm thankful for all of it, and all the more so if they are enjoying their time with the game as you seemed to be.