I have opened a new bank account with my existing bank and i cannot see the new account when i am trying to update/add

Glad to have you here in the Community, @spiro1.

I'm here to help connect your new bank account to QuickBooks Online (QBO).

Before anything else, did you receive any error messages when trying to add your new bank account? Any additional information would help us provide the best resolution to resolve your concern.

In the meantime, let's try accessing your QBO account using a private browser and add your new bank account from there. There are times that the browser stores frequently accessed data, thus causing QBO to act weirdly. Press this shortcut key on your keyboard to open a private browser:

• Google Chrome: Ctrl + Shift + N
• Mozilla Firefox: Ctrl + Shift + P
• Safari: Command + Option + P

Once logged in, go back and try to connect your new bank account. If this works, it means that you need to clear the browser's cache so the system can start fresh. If you get the same result while using a private browser, I recommend switching to a different one.

After you connect it successfully, you might want to learn how to categorize and match your downloaded bank transactions. For more guidance, feel free to check out this article: Categorize and match online bank transactions in QuickBooks Online.

If you need any additional assistance connecting your bank account, you can leave a comment below. I'll be sure to get back to you.