Hi @the_faery_queen-,
Most banks that you can sync with QuickBooks Self-Employed (QBSE) are on the list more than once. This means, there's a chance you're connecting to a different online bank with the same name.
Let's ensure you're connecting to the correct online bank account. Instead of a search using the bank's name, use its URL or web address instead. This way, you're connecting to a specific account, and not some other accounts with the same name.
You also have the option to connect an online bank account using the mobile app. Refer to this article for the steps: Connect bank and credit card accounts to QuickBooks Self-Employed.
When you have the bank connection established, take a look at this article: Categorise transactions in QuickBooks Self-Employed. Both steps for a browser and a mobile device are in this article, for your reference.
Post a reply in the comments below if you have other concerns with your online bank connection in QBSE. I'll be sure to get back to you.