My expiration is on 30 December, and due to holidays I would like to pay it before that. Is there any chance I can do that?

What you would do in this situation is add credit to your account for the renewal value. You can do this from your client area by selecting 'My Details->Account Credit->Add Credit' . When an invoice is generated, it will automatically draw from account credit if there is any available.

Fenomenal!!! Perfect! 

Now I got asked a personal question I did not know how to answer. How do I change account questions?

 

So no, no security questions, but still asked about my first boss. Something is wrong.

(PS I will activate some 2FA anyway)

 

Is that when you were adding credit? Or logging in?

Adding credit, correct. I was already logged in.