I appreciate you getting back to us, @Michael_Vowles.
The possible reason why the bank doesn't appear on the dashboard is that the bank account isn't listed or inactive from the Chart of Accounts. Let's make sure that the bank account is listed or active from the Chart of Accounts to make it appear on the banking dashboard.
Here's how to verify:
From the left panel, click Accounting.
Select Chart of Accounts.
Click the Gear icon on the page.
Put a check-mark beside Include inactive to show all inactive accounts.
Look for the bank account name.
If the account is not on the list, you can create a new bank account.
If you found the account inactive, simply click Make active under the Action column.
Once verified, I'm confident that the bank will appear on your banking dashboard. You can now also upload a CSV file again from that bank. For your reference, you can check out this article for the detailed steps and information: Manually Upload Transactions into QuickBooks Online.
You might also want to read this article to learn how to match downloaded transactions: Add and Match Downloaded Bank Transactions.
Drop me a reply below if you have other questions on uploading bank transactions in QuickBooks. Have a great rest of your day.
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