I can help connect bank accounts in QuickBooks Online (QBO), Lisa3850.

The Banking menu mentioned above is now the Transactions tab in QBO. Please follow the steps below to link your bank account.

1. Go to the Transactions menu.
2. Select Bank transactions.
3. Click the Link account button.
4. In the search bar, enter your bank name or URL.
5. Tap Continue.
6. Enter your Sign info in the Login and Password fields, then select Continue. 
7. Pick the account you want to connect and date to pull transactions from the drop-down arrow. Then, hit Next.
8. Choose your account type on the Account type drop-down arrow, then Next.
9. Follow the on-screen instructions to complete the process.

For more details, check this link: Connect bank and credit card accounts.

You might find the following articles helpful about adding and matching transactions in QBO: 

• Download, match, and categorize your bank transactions
• Reconcile an account
• What to do if you get a bank error or can't download transactions

Keep me posted if you have any other questions about connecting your bank to QuickBooks. I'm always here to help. Have a great day!