Xbox Game Pass Ultimate New Deal Not Available?

Hi, there is currently a limited time offer where I can purchase Xbox Game Pass Ultimate for 3 months for just £1, however, it will not give me the option to do so. I’ve asked a few other people if they had the same problem trying to buy it, and they said
no. When I go onto home and try to find the deal, it does say on the thumbnail that it will give me Xbox Game Pass Ultimate for 3 months for £1, but when I go onto it, it only displays the option to purchase 1 month of Game Pass for £11. I tried going onto
the Microsoft website and it seemed that it offered the option to pay £1 for 3 months when I wasn’t signed in. But when I sign in, it only displays the option to pay £11 for 1 month. Could someone please explain this to me and maybe tell me how I could purchase
the 3 month deal?

:)