"Please authorize this purchase with a quick security check"

Hello, I am trying to get the monthly subscription for WoW, but the screen for “security check” popped up and still couldn’t proceed after inputting the expiration date and cvv.

What does this “security check” supposed to mean?

Nevermind it is working now somehow

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Hello, I’m having the exact same problem by 02/03-2020, how do i fix it?

I had this problem when I was trying to buy an adventure on my mobile. It seems to work if you try it on a PC. It asks you for the expiry of your card and its CVV. But on the mobile it doesn’t seem to give you the option to do this (at least not on Chrome on my android phone).