At saving my project or building I get the warning that "Your trial for Adobe Extension Builder has expired."
I have a valid subscription for the product and can't find the way to activate the license. I'm using Extension Builder 2.1 and Flash Builder 4.6
If anyone is having the same problem:
The link for downloading the store build can be found at your order history, you have to log in to your Adobe account and search your orders, you will find a small "download" text at right of your Extension Builder order.
Once installed it will prompt you to sign in with your Adobe ID.
Seems logical but I spend a couple of hours looking in subscriptions and services and my old emails.