You can use the theme only for your personnel ecommerce projet.
The licence gives you right to use it only for one ecommerce project.
With PayPal payment.
You can download it in your private account, in part "My orders". Click on the order name, to get the download link
Yes, support concerns the installation of theme, you can also ask for minor modification. For important modifications, please to ask me for quote request, from the contact page form.