Yes, simply deactivate your software and then you are free to install it on any other PC you like.
No, Unlike physical items software can easily be duplicated and so we do not accept returns once the software has been ordered. if you have any technical problems you can get free help and support from us on our technical help forum.
You need internet only for first registration, it will then work without the internet.
You get any & all updates released for six months after purchase.