Please know that we can't access your account as we don't have the necessary tools.
Can you also tell us a bit more about what happened when you tried to connect your account? Did you encounter any error messages? We're asking these questions to make sure that we give you the correct steps to sort this out.
In the meantime, I'll share some troubleshooting steps that can resolve common errors when connecting banks in QuickBooks Online.
To get started, click the link below that corresponds to the error that you're getting when adding your bank:
Just in case a browser issue is preventing you from connecting to your bank, you can use the steps in these articles on how to address that: Troubleshooting browser problems.
Lastly, check out these additional resources to help you make the most of this feature once you've successfully connected your bank account: