https://www.webshopdata.com/app/easywebshop-ogone/index.php
The connection with Ogone is very technical. It is important that all settings are correct. If not, the connection will not work.
unknown order/1/r
This error shows if "URL of the merchant page" is incorrect
unknown order/1/s
This error shows if "SHA-IN pass phrase" is not the same
You can contact Ogone / Ingenico support at support@ogone.com.