1. Login to your Woo360 / Wordpress Site by going to your domain name or temporary URL and adding /wp-admin at the end. ( i.e. www.domainname.com/wp-admin )

2. Click on "WooCommerce" in the dashboard

3. On the left click "Extensions 

4. Click "Connect" under the WooCommerce.com Subscriptions Tab

5. If prompted enter your Wordpress / WooCommerce login credentials and Authorize Access 

note: if you don't have an account created view this post HERE for login directions

6. Once authorized you will be able to update / install / associate plugins and extensions you purchase off of woocommerce.com