We automatically set your feed to disabled when we've been unable to generate mailings from it 3 times. You can use the steps below to correct the problem and re-enable your feed. There are a few things that can cause your feed to be disabled:
To resolve this, login to your account and go to the "feeds" tab. Then click "edit" next to your disabled feed and click the "settings" tab next to where it says "success email". Here you can update the feed url (if it's moved) and re-enable your feed. Click "save changes" and you're done. We'll try accessing it again on your next send date.
To resolve this, login to your account and go to the "settings" tab. Enter your mailing address and click "Save Settings". Then re-enable the feed using the same steps in #1 above.
Your mailings will start to be generated again once you feed is re-enabled.