Change payment method to a turkish credit card

I am located in Europe and used the Argentinian youtube premium trick. After the changes, I aquired a Turkish credit card. I removed from my youtubepremium account the argentinian payment method. Used NordVPN and set to Turkey. Now when selecting again youtube premium and one of the offers I get a message "We couldn’t verify your country" am I changing to quickly countries, or have they blocked the common VPN provider?

Edit: I did this all from a computer, not tablet or mobile