Very sorry about that. There was a bug that made saving on web not work properly, but I fixed it and uploaded a new build. It should be working now, but you will have to start at the beginning.
Wow, 10 hours. Really sorry about that. There isn't anything I can do because the save file wasn't stored properly in the previous build. The costs of the upgrades have been reduced in the new update, since they were way too high before. If you do decide to play again, hopefully you have an easier time progressing. Either way, thank you so much for playing.