Well, last year I made a lot of online payments around January and triggered a Mastercard alert. My card was disabled for online purchase making the AV subscription fee impossible to pay.
I resolved the problem with my bank but when I tried to put my card infos back into AV's account manager it kept on giving the same error as when it was blocked.
So I've been paying my subscription using paypal till then so I don't think I won't ever have your problem because of AV shitty way of handling their card validation.

[Linked Image from w3.the-kgb.com][Linked Image from w3.the-kgb.com]