Hiya, thank you for commenting!
This has been a known issue from this version of the game; it is very buggy due to lack of development time. We have been rebuilding the game during the past year to remedy these technical issues.
Unfortunately, because this demo's Unity project is very difficult to work with and does not reflect the current state of the game, we will not be supporting this build further. However, there will be a new demo in the next month or so with enhanced gameplay & story scenario, so please look forward to it!
We apologize for the inconvience. If you want to progress still, the beginning message to type for access is "SPHINX OF BLACK QUARTZ JUDGE MY VOW".