Thank you for reaching out, TH76. I appreciate the time you’ve taken to look for solutions. And I completely understand how it feels when encountering Error 324, especially since it seems to happen frequently for you.
 
This error occurs when QuickBooks is unable to locate the account during its connection attempt to your bank or credit card’s website. While I know this can disrupt your workflow, rest assured, our Live Support Team is here to help. They have the tools and secure environment needed to investigate this further and resolve the issue.
 
To reach them, click the Help button located in the top-right corner of your QuickBooks Online account and select the Assistant tab to receive assistance from the QB Assistant. After that, simply enter your inquiry and choose either Chat with us or Have us call you.
 
We’re committed to helping you get back on track as quickly as possible. Please don’t hesitate to return to this thread if you have any other QuickBooks-related questions.