Hi,
You can change the HikaSerial configuration to generate the serials at the order creation but it is not recommended.
It will means that you will create and send a serial to someone who haven't pay yet, so you can potentially provide free gift certificates.
If you're using a payment platform which can confirm the order automatically (like paypal and a lot of our payment plugins), you won't need to modify the orders in the backend afterwards.
With HikaSerial, the best way to confirm an order is to edit the order and then modify his status.
The edition of the order status in the backend order listing does not allow to send a proper email, because the email content you see in the popup is generated before the modification of the order ; so HikaSerial did not generate the serials yet.
That's why it is better to edit the order and edit the order status there ; you can use the "notify customer" checkbox to send the generic notification during the modification.
Regards,
Jerome - Obsidev.com
HikaMarket & HikaSerial developer / HikaShop core dev team.
Also helping the HikaShop support team when having some time or couldn't sleep.
By the way, do not send me private message, use the "contact us" form instead.