Thank you for your patience, this error has been resolved.
The error you're seeing, "There was a problem connecting to your account. Please try again later." is generated by our banking partner. We are working with them closely to resolve the root cause, but we're not quite there yet.
We apologize for the connection issues some of you are experiencing while connecting or updating your bank or credit card. We are working with our banking partner trying to correct this issue, and will post updates as they become available. Thanks to all of you for your patience and understanding. We sincerely apologize for the delays.