I have the same problem on the Mac side. Quicken Premier Version 6.5.1 (Build 605.42638.100). macOS 12.0.1. Unable to create a new Schwab account. I have an old Schwab account from 25 years ago! It's not set up for online access. It looks like this problem has been around for a couple of months now. That does not give me a lot of confidence in the Quicken platform.