When you integrate your opencart website with Klaviyo, Klaviyo will look for the following API to get the data from your website
- /index.php?route=module/klaviyo/orders
- /index.php?route=module/klaviyo/carts
The following parameters are passed from Klaviyo to connect and get the data from the API
- api_key
- since
- page
- count
You can test if your API is working fine or not by manually passing the parameter values
For example,
https://<yourwebsite.com>/index.php?route=module/klaviyo/orders&api_key=<your_api_key>&since=1588291200&page=0&count=10
https://<yourwebsite.com>/index.php?route=module/klaviyo/carts&api_key=<your_api_key>&since=1588291200&page=0&count=10
If you could see the data from the API, then it means the extension API is working good and it is now with Klaviyo to get/sync the data.