Was the game abandoned?

it seems after the update I cannot load my old save (the immediate previous version)

the movement of camera is wabbles a lot and when playing on the monitor, it gives me some serious motion sickness.

I unlocked it, but I can't install it in the elevators, lockers, or doors. How to access it?

I had an issue where I customised some of the girls and then I went to set up the pocket dimension section it just gets stuck on a loading screen, any fix?