Hi How do I add Bank Account detail,

Do you have any error message on on your NAB Connect account on the Banking page? Let's do a manual update to get your latest transactions by going to Banking tab and select Update. 

If you've recently changed your bank's login details or account number, you'll need to update that info in QuickBooks Online as well so your transactions will be downloaded.

Here's how:

1. Go to Transactions and select Banking.
2. Select the tile for the bank account. Then select the Edit ✎ icon.
3. Select Edit sign-in info.
4. Update your info as needed.

You can also check on this article on what to do if you get a bank error or can't download transactions in QuickBooks Online.

Feel free to message us back if you need further assistance with your bank transactions.