I want to ensure you'll be able to connect your bank successfully, @ErichW.
The error usually occurs when the system is unable to locate your account on your bank's website. To get past with this error message, I suggest following the steps provided by AlexV to click on the Reconnect my account link after the error message or click on Update if there is no issue on the bank's end.
If the problem continues, I recommend following the next solution provided in this article: Fix Banking Error 324.
However, if the issue persists, you may get in touch with our QuickBooks Support Team for further investigation. For the support's contact information, you can check it here: Contact the QuickBooks Online Customer Support team.
Don't hesitate to drop a post if you have any other banking questions. I'll be around to help.
