Step 1:
Go to Merchants → Gateway Integrations and activate the Merchant Warrior tile with the “+ Activate” button
Step 2:
Enter the merchantUuid, apiKey, and apiPassphrase from your Merchant Warrior account. To enable 3DS transactions, set Secure3DS to “Yes.” Press the green “Create Gateway” button to create your Merchant Warrior gateway.
Step 3:
Apply the gateway to your offers and upsells within the campaign.
Secure 3DS:
If using challenge (native) 3DS, be sure to implement proper handling on the checkout page