hi there! so i searched around and found a fix!
first, place the Timeporter app in your Applications folder.
then, open Terminal on your Mac, and type the following:xattr -cr /Applications/Timeporter.app
I tried this, it is pretty interesting. I was confuse in playing this game, because it doesn't have a clear direction on what to do and where to go. And the transitioning scene was a bit too hard in the eye with all the colors and stuff. You should add some form of clear direction in the kinda puzzle like gameplay. Overall is a neat idea, and I like the ending, it was ≧◡≦. cute.