is it possible for the html5 website to use Tthe existing website name?
Is there any cost for the storage /hosting?
3) the html5 is technically a website isnt it? Will it be something like this webpage which says it uses html5? http://www.zippergaleria.com.br/
You have to create a specific address for your webapp and it must different of your website. You can find more details in this support article.
The hosting is included in price.
We don't really understand your question. Nevertheless, you can test your webapp, you just have to click on the "Extras" tab, take the url of your mobile website and test in your browser.
The Tiger Team
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