You mean this message:
Unfortunately, we are unable to process your online payment due to a system issue. Please try again later or contact Member Accounting at XXXXX or XXXXX for assistance with your payment. Thank you for your patience while we resolve this matter.
Yes, I keep getting this message, so I did an online chat with MS and they said the site is going through maintance and will be working shortly.
Hopefully it will be back up shortly.