why i cant play it?
I assume you are speaking about the web version. Depending on the browser, OS and other factors, there might be some difficulties when trying to play the game. If the web version doesn't actually load, then we suggest the best option is really either playing the desktop or the mobile version.
We can try and look at what the issue could possibly be, but we would need some more details about how you're trying to run the game (assuming you're playing the Desktop version) or what browser/OS you are currently using.