Changing or checking on auto renewal payment options

Have received email saying auto renewal payment option had expired (Creditcard) it says my protection will expire on 4/26/16. But my licence says it will expire on 5/7/16. My question is how do I check if the card on file is expiring or is this a fake email. I have been with avast for years, I see where we are to check which credit card distributor that was used but i can’t find my credit card statement from a year ago to see which one handled my licence, so again how do I check if my card on file is expiring. Thanks for any help in this matter.

check expire date on your credit cards …

Scroll down and submit a support ticket >> https://support.avast.com/support/home

None of our active credit cards are due to expire, the problem is one of our cards we had was discover we got through sam’s club but they changed to master card, Im not sure if the card on avast file was the discover card, and cant fine old discover bill to see if the numbers in email are even our old numbers, I have submitted a ticket was just hoping someone knew of something I missed in looking to check on changing payment options