iTunes Match Auto-renewal

I have received 2 emails from iTunes saying that there is a problem with my payment information and iTunes Match cannot be automatically renewed. After
receiving the first notification I went to my iTunes account and confirmed my credit card is accurate and current. The same card is being used regularly for iTunes purchases.

There is no link in either email allowing me to go to a specific page nor is there sufficient information in the email for me to know exactly what is
wrong.

I would like to continue using Match but do not know how to correct this problem being reported.