EDD All Access uses licenses to provide automatic upgrades for the extension. You will have received a license key in your purchase receipt; copy the key to your clipboard, then go to  Downloads → Settings → Licenses and enter the key into the “License Key” field under “All Access”. Click “Save Changes” to activate your license.

Anytime a new version of the extension is available, you will be notified of the update just like any other WordPress plugin.

Important Concepts:

All Access Product:

An All Access Product is a special type of product in Easy Digital Downloads that, when purchased, gives a customer access to download many different products. You can define which products the customer has access to, how long their access lasts, and how many downloads they get per day.