Hello again, dafna.
Since we've performed the basic troubleshooting steps, I recommend reaching out to our Customer support team, they have the tools to pull up your account in a secure environment and determine why you're getting this issue.
Also, I want to ensure your issue gets prioritized and addressed on time, thus I'll be providing this resource for the support hours. It contains the time on when the support is available, depending on your type of subscription. Just go to the QuickBooks section of this article for more info: Contact QBO support.
You can follow the steps below to connect with us:
You may also read this article to learn more about online banking: Connect bank and credit card accounts to QuickBooks Self-Employed.
Please don't hesitate to reach back out to me if there's anything else you need. Have a great day. Take care!