Hey it sounds like you are not running the html file from the unzipped folder but in the zip archive instead. You need to unzip the entire folder and then drag the html file from that new folder into your browser. Hope that helps!
It should definitely be possible to keep the player masculine throughout the entire game, the feminization is optional even though it's a big theme of the game.
It shouldn't be a problem, no. There's an official android version that I release on Patreon. The only thing you're missing out is little hover effects for the map and such but you can definitely play the game without that.