Error on FUT

[MrRubyDoyle]

I am trying to log into Fifa 21 Ultimate team on my Xbox One X but it is telling me that i am "Please note that you can only play FIFA Ultimate Team on one device at a time. Your FUT session on this system has been closed, as you are already playing on a newer generation system." I do not have a next gen console, just this,

Any ideas why this is happening?