Am unable to add a new account at Alliance Bernstein Private Clients. In Quicken, I'm able to enter the username and password, enter the six-digit code sent by SMS text, but the response - for the past few days - has been a CC-501 error, with a warning not to call Alliance Bernstein to report it. It's Quicken's servers that cannot connect with AB's.
I should add that Quicken is able to daily update prices and transactions in my other AB accounts - it's only the ability to add an account that's the problem.
An old, closed thread addressed the same issue; unlike in that case, I'm correctly using the "Alliance Bernstein Private Clients" link in Quicken. Any assistance or suggestions would be much appreciated!