Yes, you will get license key on your email address within 10 to 15 minutes. You have to use this key to activate the software.
Simply contact us at support@mailvita.com or Live Chat
No you don’t required internet connection to activate product
Tax number is not a mandatory field, the customer can skip it if the system believes it is not valid. He can place the order and then send us the tax number registration or his certificate for tax refund