I cant play on my account that ive had for 6 years. Its not banned but im getting we couldnt get your latest saved data when the game loads and then req service errors and profile sync errors if it does load. This is the only account that doesnt work on my xbox. Im in the US and have no other issues with other accounts
Try removing that account from your Xbox One and then re-downloading the profile, this has worked in the past to fix various issues. I would also perform a hard reset of the console after doing so.