Updating billing info

I just updated my card details, any idea why at the end I was told that my next billing date would be
1 Jan 1970 ???

Hello John,
Thank you for contacting AVG Community support.
Upon checking through your account, we could not see any information about the renewal date to be 1 Jan 1970.
Can you please mention from where did you got the information about the renewal date?
We have sent the susbcription details to your registered email address, as it isn't advised to share account/order related information over this public post.
Please check and revert to us if you need any further assistance.
Thank you.