Click on this link: https://turbowarp.org/1278268633 to run the game through TurboWrap if it doesn't work. This is because Scratch's cloud variables often experience downtime, I recommend using the link. Project fully made and tested by me, with no tutorials or help as you could probably tell if you read the code.
Fully working multiplayer: Currently supports up to 4 players per server, can easily expand on this by letting more then one player use a slot or adding more slots, this also features automatic idle kicking (slot freeing), and so much more. Also fully customizable as this is just the core of it all