Hello,
There is dedicated documentation for the "credit card" plugin.
But in the "payment plugins" listing :
www.hikashop.com/support/documentation.html
(click on the tile "payment plugins")
You can read : "Credit card (collect of the information for manual processing)"
The "Credit card" is NOT a payment method which can interact with a bank.
It is a method which store the credit card details if you want & can process it manually.
We do not recommend the usage of that plugin.
With more than 200 payment plugins, I hope that you will find one which will suits you.
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.