I think you need to wait until you've got stats in the XML for XtremeLab, then the site can find you (this is what I had to do). The error happens when it can't find you in the XML and it tries to connect to the XtremeLab server to get your ID.
since yesterday I have credits and also on the "Your Account" on the website the credits are shown.
when they do update the stats? once per week or month??? saftladen