I have tried all of the above steps and still get the error. Do you have any other alternatives? Entering the transactions manually is not feasible as it would be very time consuming (and I already have to do this with my Chase credit card since that connection hasn't worked properly in months.) When I enter my 6 digit verification code it appears to accept it, but only updates the balance, and not any transaction. When I hit update to download the transactions it disconnects and prompts me to re-connect using the six digit code.

I see from the original post and responses that this has been an ongoing issue for quite some time, and QB engineering team has been aware since March. Hopefully that means there is a fix in place.