Reconciling account, some transactions didnt transfer from bank. Manually uploaded csv but 3 items didn't upload. Added in chart of accounts. Still not showing up. ???

Thank you for taking the time to explain that to me, @treasurer131. I can provide you with some information that'll help you resolve your concern.
 

You can manually enter the missing transaction into the register and double-check the account, date, and amounts. After that, it should show up in the Reconcile window, and you can also check the filter if it is set correctly.

Here's how to manually enter a transaction into the account register:
 

1. Go to the Accounting menu and select Chart of Accounts.
2. Locate the account you want to add the transaction to.
3. Select the View register from the Actions column.
4. From there, select Add journal entry, Add deposit, or Add check from the dropdown.
5. Select the transaction you want to add and fill out the necessary fields.
6. Once done, select Save.
    

On the other hand, you've mentioned that you manually added transactions using a CSV file, but you're unable to import your file. It may be because of the following:
 

• Incorrect mapping
• Formatting
• Money out transactions only
   

You may refer to this article for more detailed information: Common errors for importing bank transactions using CSV.

I'd also like to know what the error message on your screen says so that we can figure out what the resolution is and how to avoid a similar situation in the future.

I've also added the following articles for your future needs:
 

• Categorize and match online bank transactions in QuickBooks Online.
• Reconcile an account in QuickBooks Online.
   

Feel free to tap the reply button if you have any additional information or clarification with regards to your missing transactions. I'll be here to assist you at any time. Stay healthy and hydrated!