Logging into xbox account on Site equals error.

[CharmCityGamer_NSW 0]

Was having trouble with the crossprogression thing for Switch as I got both the Xbox One version and the Switch version in case like last year, the One version suddenly crashes me to the dashboard and never ever lets me login again. Now when trying to do the crossprogression for Switch, it kept saying nothing on Cloud even though I uploaded it to the Cloud on XB1. Now trying to log in to my One account to relink it here gives me this.
Is it a site issue or what's happening? If I have to, I can just recreate my Ballplayer if I want, but the whole point of crossprogression is not having to do that.