I do have the steps to help you get back to business, @treasurerLSLL.

You can review the list of transactions in the Reconciliation window to check any transactions in your bank statement that didn't reconcile in QuickBooks.  

When reconciling, compare the list of transactions on your bank statement with what's in QuickBooks. Once done, we can manually reconcile the transaction in the bank register. This way, the balance shows up in the reconciliation page in QuickBooks Online.

1. Go to the Chart of Accounts.
2. Select the appropriate bank account, then click View register under the Action column.
3. Find and choose the transaction.
4. In the Check column, click the field repeatedly until you'll see an "R".
5. Once done, click Save.  

I'd suggest you do your monthly reconciliations to easily catch errors and keep track of your business' income: Reconcile an account in QuickBooks Online. 

I'm just a few clicks away if you have any additional questions. Have a great day!