This is what the e-mail stated:
There appears to be a problem with your current billing method. This may prevent the automatic renewal of your subscription for Hulu Plus.
How do I update my information for billing so that I don't loss my subscription to Hulu Plus?
iPad, iOS 7.1
On your computer's iTunes you should be able to edit your payment info by going into the Store > View Account menu option and logging into your account, and on your account's details page there should be a payment link. If you are doing it on yor iPad then try tapping on your id in Settings > iTunes & App Store and selecting 'View Apple ID' on the popup - that should also give you a payments link on your account's page.
Changing payment info : http://support.apple.com/kb/HT1918
I recieve an e-mail saying that there was a problem with current billing method, what is that
