There is no limit on number of websites you can build with one license. However, you need to be the owner of all websites, re-selling them with our theme installed is not allowed. New owner will need his own license.
Yes, you are free to edit the theme files in any way you want. There are no encrypted files or code.
Yes, if you are having any problems with the theme feel free to contact our support anytime.
It can be installed like any other regular wordpress theme. You can follow exact installation instructions here.
No, the only price you pay is for the theme itself. It's one time payment and all future updates are free.
Refund can be issued within period of 30 days after purchase if the theme doesn't suit your needs.