I have a 2020 key for another computer. Can I download a current version and use my key to access all the features? I no longer have the 2020 maintenance.
If the key wasn't generated based on the UID of the original computer, then yes, you can download the application and use the key to register it. If the software uses online activation, it's absolutely necessary to be connected to the Internet at all times.
Access the Support page to log-in to customer area: http://www.2020spaces.com/support/