Integrating with CommerceV3 is easy! You simply request the integration through your CommerceV3 admin and you're done.
You will need to provide them with your Fanplayr Account Key which can be accessed in your Fanplayr Portal here.
To request integration just go to your Admin, then to Settings / New Features, and you should see "Fanplayr Conversion Tracking" listed. Tick the box next to it and click the "Submit Upgrade Request" button.