My affiliate link:
https://app.kajabi.com/r/mo4s2a46/t/dzlkzuvi
How to create a gift offer.
https://help.kajabi.com/hc/en-us/articles/360037760293
Edit check-out page:
If you will edit the details on your checkout page. That can be done if you go to Products>Offers>select your offers>Edit checkout.
The Google Analytics
To embed the tracking code, you can use the third party integration. I used an alternative; Site Details -> Page Scripts.