QuickBooks Online (QBO) has a default account that includes Accounts Receivable A/R thus when creating invoices it will automatically associated with the default A/R. These are the ones created when you set up your company, Nataglia. I'll elaborate more about this matter.

If you want to transfer to the A/R account that you created you can create a Journal Entry to transfer the payment and then apply it to the correct invoice using the Receive Payment feature. 

Here's how:

1. Sign in to your QuickBooks Online account.
2. Select + New and click on Journal entry.
3. On the first line, select an account from the Account field. Depending on if you need to debit or credit the account, enter the amount in the correct column.
4. On the next line, select the other account you're moving money to or from. Depending on if you entered a debit or credit on the first line, enter the same amount in the opposite column.
5. Check the amounts, you should have the same amount in the Credit column on one line and the Debit column on the other. This means the accounts are in balance.
6. Enter information in the memo section so you know why you made the journal entry.
7. Once done, click on Save and new or Save and close.

After this, we can apply the correct invoice to receive that payment and connect it to the invoice to balance your accounts.

For more information you can check out this article: Fix a payment applied to the wrong invoice in QuickBooks Online.

When everything is in place, you can utilize this article for future reference: Reconcile an account in QuickBooks Online. This link can walk you through the steps in matching your accounts effectively.

Please let me know if you need further clarification regarding handling your receivables. Feel free to visit this forum anytime, and I’ll be standing by for your response.