Can we connect our bank with QuickBook so that all the payments and receipts automatically reflected in our Quick Book ?

Welcome to the Community space, snegi.

First off, may I ask which financial institution you're currently with? Additional information will be much appreciated.

Going back, we can perform some troubleshooting steps to see if this error is due to your regular browser. To do so, we can log in to your QuickBooks Online (QBO) account using a private browser. This prevents websites from using cookies and doesn’t record any history and data.

Use these shortcut keys on your keyboard to access incognito mode:

• Safari: Command + Option + P
• Google Chrome: Press Ctrl + Shift + N
• Firefox or Internet Explorer: Ctrl + Shift + P

If you can connect your bank to QBO using a private browser, it means that you need to clear the browser's cache to refresh the system. If you get the same result, I recommend switching to a different supported browser.

To ensure the best experience when using the platform, you can review the system requirements for QuickBooks Online.

If the issue persists after performing the steps above, you can manually upload transactions from your bank into QuickBooks if you require urgency with managing your data.

Furthermore, once you've uploaded your transactions, you can personalize and arrange them accordingly. Refer to this article for further assistance: Categorize online bank transactions in QuickBooks Online.

Don't hesitate to reply to this thread and give an update about your bank institution. We're here to help you 24/7.

@snegi-ocrolus-co 

You can use MT Online or one of the converter tools (e.g csv2qbo @ $60 one time license) as a workaround.

https://www.moneythumb.com/?ref=110