You may use this page to modify your existing subscription. Log in below to see available upgrades, then select the options you would like to update and select 'Add to Cart'. Once you are done, select 'Purchase' to process payment and upgrade.
Note: Licenses purchased prior to September 2019 must be upgraded to the new license system before being renewed. If you have not yet done so, you can create a free account here (video example) and then migrate your licenses on the portal (video example). Once your licenses are migrated they will show up on this page for you to renew.