So i have created a very simple unity game, just consists of a slider and some images and i uploaded it to itch and it works fine on my windows pc but on an apple mac, on chrome and safari, it gets stuck on the unity loading bar, the loading bar doesn't fill it just sits there empty. 

I changed the compression in the player settings before building to disabled. 

I would really apreciate some help!

Are you able to open the browser console to see if there is an error message? I’ve heard that there was an issue with the Unity web player that may affect newer versions of Safari. There may be a JavaScript error in your browser console.

The same thing is happening to me and I'm teaching a class using unity with my students trying to publish their games now   I am using a MacBook and the game will not load it all using chrome, and freezes 80% of the way through when I try safari!   On the other hand when I dial in remotely to one of my schools PCs it plays perfectly