Do you have your system's region set to the US? If yes, change it to the UK. See the link below for instructions on how to do that. https://support.microsoft.com/en-us/account-billing/change-your-country-or-region-in-microsoft-store-5895e006-34f4-10f7-16b1-999e40adb048 You can also purchase Silver Coins from the Xbox website at the below link. https://www.xbox.com/en-GB/games/store/destiny-2-silver-xbox/c2b3mcdf0c4l