I got an achievement for holding t to reset. Hoolray. Now what? I'm stuck. What does that artsy prism thing want me to do, other than alt f4?

Spoilers. The last part is infuriating because all of this games mechanics are super easy to missinput: Using the incorrect color permanently, using a portal with one of the directions on a ring wrong and not activating it again as you are falling, etc. And then the last section of the game, which becomes "interpret this clues", which is cool, has to be done back to back! The "planning" to do all clues is not particularly difficult, a lot can be done without mixing colors on a teleporter,...

When I start the game, it tries to go full screen. when I click on it I have the music for a few seconds then the game exit full screen. I still cant acces the setting menu, when I click on the game it goes back to full screen but I'm still not focused on the game. The game keep alternating between the two modes and I can't access the setting menu or anything. Any ideas on how to fix the issue ?...

Here: https://psteamcommunity.yuanyoumao.com/sharedfiles/filedetails/?id=3384494604 You can turn the color to, say, red, put red in, turn the color to white and get all 3 back. This allows you to get arbitrarily many colors. Is this intended/required?

To be honest I don't have any idea what this game is about, what my avatar was, what/who the guide NPC was, or what I did to complete the demo. I only clicked any button I could on each side of the cube... I couldn't really ask anything to the NPC, since it disappeared after every dialogue and didn't appear again after a time reset. At the end of the demo, the NPC said that there were energy conservation puzzles. But I don't understand what that mean or is, or if I did any. If someone asked me to coment ...