Hello there, riomato.

Did your bank move to a new platform or website? Instead of reconnecting, let's try to add NetBank again in QuickBooks Self-Employed. Make sure to use the correct bank website.

If the same error persists, I recommend reaching out to our QBSE support so they can check what's happening. They will be able to see your account and report the error you're getting.

Here's how:

1. Click on Assistant.
2. Type Talk to a human.
3. Enter the bank error you're getting.
4. Select I still need a human.
5. Select from Message an agent and Get a callback.

You can also import your bank transactions manually in the meantime. Check this article for the detailed steps: Manually import transactions into QuickBooks Self-Employed.

Let me know how it goes so I can assist you further.