Click on Upload Plugin link located at the top of the page. On the next window, click Choose File (there you’ll need to choose Cardinity Easy Digital Downloads module, which you’ve downloaded from Cardinity website) and press Install Now.
If everything goes well you’ll see Activate Plugin link on the next page. This means that Cardinity payment module was successfully installed.
Click the Activate Plugin link on the page you were redirected after module’s installation.
Once the plugin is activated you can see it in Plugins list
Next step is plugin configuration. Navigate to Downloads→ Settings.
Click on Payment Gateways tab, activate Cardinity Gateway in Payment Gateways section and click Save Changes
Open Cardinity Gateway section, enter your test/live API keys and click Save Changes.
That’s it - you can start receiving Credit/Debit Card payment using Cardinity services!