I forgot to add the deposits to the bank deposit in quick books so now I cannot reconcile. How to fix this?

It's nice to see you here, @joaniep66,

When reconciling in QuickBooks, you have to make sure the bank statement data matches with the transactions in QuickBooks Online.

If you're unable to reconcile, make sure all entries are entered into the program. If there are missing deposits that is in the bank statement but not in QuickBooks, create them using the + New button on the toolbar.

Once added, make sure to categorize the transactions properly. These steps will guide you how to match a QuickBooks entry to online banking:

1. Go to the Banking menu and select the transaction to expand the view. 
2. Find the payment from the bank and choose Find match. See this sample snapshot:
   
3. Review the entries in the Match transactions page. These transactions are those that were already added in QuickBooks.
4. Mark the items to match then press Save.

This link will guide you how to manage online banking transactions: Categorize and match online bank transactions in QuickBooks Online

Also, there are a few reasons why your bank statement differs the balance in QuickBooks. To fix a balance discrepancy to proceed with the reconciliation, here are some articles you can refer to:

• Reconciliation Hub for QuickBooks Online
• How to Fix Differences Between QuickBooks Balance and Bank Balance.
• Fix an Opening Balance to Match a Bank Statement

Feel free to get back to me if you have additional questions about this topic or need anything else with QuickBooks. I'll be more than happy to help you. Have a lovely week ahead!