Hi there, dr-otulana-gi.
Let me add some information to make sure you'll be able to connect your bank into QuickBooks Online.
If you've successfully connect your bank account using a private window just like Fiat Lux - ASIA mentioned, then that's good. After that, you can go back to your regular browsing window and use these links to clear browser's cache:
For more details you can visit this article: Clear cache and cookies to fix issues when using QuickBooks Online.
You can also check out other support browser that works perfectly with QuickBooks Online.
Feel free to come back to me if you still have other concerns about bank feeds. I'll be happy to help. Have a wonderful day!
