It seems recently (over the past month or so) we have been having a warning box pop-up when trying to sync. Its the QB "Bank Feeds in Use" warning box. This stops the sync engine from continuing and is extremely annoying. I don't recall this ever being a problem in the past and I don't think we have changed the way we use QB. https://www.dropbox.com/s/erkcqk2esm7n35k/error.jpg?dl=0
I have created a support case for our team to assist you with this issue. They will schedule a time with you and troubleshoot this over screen share.