Error code 324 "We can't find this account at your bank"

Hi Khemaienterprises,

Error 324 occurs when QuickBooks is unable to locate or access the bank account or credit card account that you are trying to connect or sync with. This error can be caused by various issues, including incorrect login credentials, changes in your bank's website, or issues on the bank's end.

 This may be because:

• Your bank or credit card company has modified the account or shifted it to a different server.
• You've updated the account name or other information on your bank or credit card company's website.
• Your bank or credit card company has provided a new account or credit card.
• You've terminated your bank or credit card account.
• You possess multiple accounts with the same name at the bank.

Here's an article with steps for your reference: Fix banking error 324 in QuickBooks Online and QuickBooks Self-Employed. You can also consider uploading transactions if the issue will take some time.

Feel free to go back to this thread if you have more questions with your account.

@Khemaienterprises 

Try opening your QBO account on any private/incognito browser.