Updated on October 29, 2020
We were able to put a fix in place that allows the new Bankivity (v8) to download transactions using OFX from Vanguard. Banktivity 7 and previous versions are no longer under active development so OFX/Direct Connect for Vanguard will only work with the current release.
Previous post: Vanguard has made a change on their end whereby users trying to connect and download transactions into any personal finance app are failing with an incorrect sign on error. We will update this article as we learn more. Sorry for the inconvenience!