I'm not sure if this is related to the new release as I was experiencing the issue with 2.7 I was hoping the new release would fix the issue.
I am using eshop 2.8 with Joomla 3.8.2. I use Payflow Pro for payments but the transactions in PayPal say 'duplicate transaction.' The product sells in eshop and sends notifications but the transaction is not processed in PayPal.
I looked at PayPal docs and found this:
If the X-VPS-REQUEST-ID has been used before, the server views it as a retry transaction and the transaction is treated as a duplicate. The response to the original transaction request is returned and "DUPLICATE=1" is appended to the response indicating that this transaction is a duplicate. In Manager, you will see these DUPLICATE transactions with a TENDER type of "N".
BUT, PayPal also says:
Note: Any transaction with an ID older than 8 days will be treated as a new transaction.
Has anyone experienced this? Is this a PayPal issue or eshop or Payflow Pro issue? Any help is appreciated.