Welcome, and thank you for getting help with connecting your bank account. I'm here to help.
Your bank's name cannot be searched on the Banking page in QBO. This suggests that they may not want to establish a connection with us, or it's possible that our engineers are still in communication with them.
As a workaround, you can download your transactions from your bank's website in a supported Web connect file format and upload them to the Banking page in QuickBooks. You can do this twice or once a month, depending on the number of transactions you have. For more details, refer to this article: Manually upload transactions into QuickBooks Online.