Payment Plugin: EZIC

You should add an IP address of your website to 'Specify Trusted Static IP Addresses allowed to originate Direct Mode transactions' list at EZIC account -> Setup -> Access Security

Repeat Billing and Up-selling

This feature enables you to perform a future repeat-billing or up-sell for the same consumer within the same gateway account, rather than storing and specifying the card number and billing address again. Simply check "Enable PCI Compliant Repeat Billing, Up-selling and Cross-selling" in Step 6 of the Credit Cards setup page.