HMRC bank account to pay voluntary NI differs on the letter & website

This is from a person living in the EU to pay the voluntary 3 NI using the UK account. The HMRC bank account stated in the letter I received in April 2024 was Sort Code 20 20 48 - Account Number 30944793. However, when I checked the website (https://www.gov.uk/pay-voluntary-class-3-national-insurance/make-online-or-telephone-bank-transfer) today (04/03/2025), the bank account detail is different (Sort Code 08 32 20 / Account Number 12001004) from the letter. Has HMRC changed the bank account? My question is which account I should send the payment to? 30944793 as stated on the letter or 12001004 as on the website?

Hi,
Please use the bank details shown on the link below for your payment of voluntary National Insurance contributions:  
Pay voluntary Class 3 National Insurance
Thank you.

Thank you for the reply, HMRC Admin 19. So I should use this one; sort code - 08 32 20, account number - 12001004. Correct? Regarding the PAYMENT REFERENCE, shall I continue using "National Insurance number followed by ‘IC’, surname then initial." as I have done before (I am living abroad)?

Hi,
The link provided has the reference information.
Please scroll to the bottom of the link previously provided.
Thank you.