My organization has had the same issue for over 6 MONTHS now! I've called customer service multiple times and they tell me that this is their engineers' top priority. With the amount of resources at QB's disposal I find it incredible that this issue has not been resolved. I've basically been told to stop calling and just wait for a fix for almost 7 months. We use a major bank and they are no issues on their side. We've tried all the suggestions above to no avail. Still manually importing loads of data for several months. This is QB issue through and through.