I also have this exact same problem. Deleted all the data from my ING account going back years and am unable to re link the account. Followed all of these directions and nothing works. QB have given me a case number and said there is an issue that that they are trying to resolve related to an ING security update but nobody can give me a timeline for a fix. I received an email that had the 16th June 3pm to get an update. No update received. Really poor customer support.