Thanks for reaching out to the QuickBooks Community. I'm here to help share some information about the Capital One bank transactions.
We have an ongoing issue where the Capital One bank account is not updating in the online banking. Our online banking team are currently investigating and working on an immediate fix.
While we're continuing to work on resolving this issue, for the meantime you can download the bank transactions manually from the bank's website and import them into QuickBooks using the WebConnect feature as a workaround.
I also encourage you to contact our QuickBooks Online Support Team so to add your account to the list of affected users. This way, you’ll be notified of any updates on the progress of the investigation via email.