I have the same transaction showing up 3 times. Do I just review one of them amd disregard the other two?

Welcome to the Community. Let me help you deal with duplicate transactions in QuickBooks Self-Employed (QBSE), @greame_winspear-.

From your browser, follow these steps:

1. Go to the Transactions menu.
2. Locate the duplicate transactions.
3. Select the Exclude this transactions box.
4. Tap Save.

Additional details are in this article: Exclude or delete transactions in QuickBooks Self-Employed. It includes the steps on how you can exclude transactions using a mobile device. 

If ever you're in this type of situation in the future, you can keep this article as a reference: Handle duplicate transactions in QuickBooks Self-Employed.

Let me know in the comments below if you have other questions about bank transactions in QBSE. I'll be around to help you out. Enjoy the rest of the day!