PDF receipts can be set to generate for Online transactions only, Offline transactions only, or Online and offline transactions. To change the current configuration on your PDF receipt to send for both online and offline transactions:
  1. Navigate to Setup > Receipt Manager
  2. Under the Actions column click Edit by the receipt that is not sending the offline receipts
  3. On the Identify Template step, scroll down to Types of transactions
  4. Select the radio button Online and offline transactions
  5. Click Save