The error prompt you've to receive means that your bank needs to grant third-party access so you'll be able to connect it with QuickBooks. Let me share some information to resolve this error.
To give consent to connect your accounts in QuickBooks, here's how:
Go to your Bank Transactions page.
Select "Agree" in response to the displayed message.
The message also lists all current accounts that are connected in QuickBooks for your review.
You can read through these articles for more insights:
If the issue persists, I'd recommend contacting our Customer Care Team. An agent will be able to further check on your account via a secure environment.
Keep me posted if you have other questions. I'm just a few clicks away.
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