I've got steps to help you successfully connect your HSBC bank to QuickBooks Online (QBO), Tomkensam.
To start, may I know if you encounter any error messages when connecting your bank to QBO? This information will help us provide you with an accurate solution.
Meanwhile, I recommend logging in to your HSBC bank website to check for ongoing maintenance or a temporary outage. You might also want to contact them to see if they've reported any known connection issues on their side.
If the issue persists, you may consider manually importing your bank transactions using a CSV file.
Please let us know if you have further questions. We're always here to help.