Hi,
There is no built-in preview for the certificate because it requires data from an order (with also a serial, a product and all the specification).
So generally, I create a sample order in the backend and I use the product file.
In the backend, you can download the product files without any limitation ; You just have to display the order, click on the file to see the attach serial and if you change the certificate configuration, you just need to refresh the image.
See "attach as download" part in the "attach serial" plugin.
The setting will also give you the content you have to put in the product configuration to create "virtual file" (for the attach serial plugin).
www.hikashop.com/support/documentation/1...ns-attachserial.html
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.