US Bank connections failing

Hey all...so I'm just and end user, but here goes.  US Bank connections via cfree started failing last month around the 10th.  Here's the error:

Error Description: java.io.IOException: HTTP Error:400 Bad Request

I'm using MoneyDance on linux..I've talked with Infinite Kind as they make the software, but they don't appear to be doing much, so that's why I came here.  Any thing I can do on my end?  Thank you.