When i upload my game and go to open it, appears a black screen and a text at 10%.
The game dont can to play.
You have provided virually no information to enable anyone to help you.
What does the browser console have to say? Any error messages?
Where have you uploaded it to?
Does it work in preview? How much memory does it say it will use?
Does it have a lot of assets?
Have you tried it on any other sites?
Have you tried with different browsers?
Most importantly, if you want quick, effective assistance, always try to provide either a .capx, screenshots, or/and a link to the exported game, so we can also test it for you.
Without these, it's just guesswork.