Cost+ integrates with OpenCart 4.x and 3.x through the NoPayn Payment Gateway extension. Upload the .ocmod.zip file via the admin panel or install manually from GitHub. You need an active Cost+ merchant account and admin access to your OpenCart store.
For the full step-by-step installation and configuration guide, visit our developer documentation: https://docs.costplus.io/docs/plugins/opencart
Need help? Contact support@costplus.io.