Mine is also not working still. I can log in using the EDIT SIGN IN INFO option, the system accepts the log in details and code from my Co-op bank dongle. It initially links and brings in transactions. If I then try to update, I get the same message as previously.

Interestingly there also seems to be a single transaction (payment into the bank) which is stubbornly refusing to come across when the feed updates. This was from around the time I started having this issue - 18th June.