You've got me here to share some insights about connecting and reconciling bank accounts in QuickBooks Online.
QuickBooks Online is updating the bank feeds to comply with new Open Banking regulations. That said, bank data can only be downloaded into the system through the Open Banking connection. This allows customers to share their financial information electronically.
For those financial institutions that do not support this feature, are advised to manually import their bank transactions using CSV file uploads until the new connection is made available.
You can check out these articles below to learn more about this process, and see what are those financial institutions that currently supports this feature: