Hi!
Steps:
1 - In "Export HTML5 project" screen select Chrome Web Store;
2 - Select "Hosted app" type;
3 - Insert your Web URL.
When I open manifest.json file we can see:
"local_path": "index.html"
It doesn't work in Chrome Web Store because the game is hosted. I changed it to:
"web_url": "http://www.ulissescappato.com/games/crazy_aquarium/index.html"
Thanks!