How do I configure the flow in Klaviyo?

First, turn on the Klaviyo integration and set your public API key in Seal Subscriptions -> Settings -> Integrations -> Klaviyo. 
After you turn this on, the app will send all new events to the Klaviyo. After someone starts, pauses, resumes, cancels, reactivates or renews the subscription, you will be able to see this metric in Klaviyo and will be able to use it to create a flow. 

You should be able to create a flow by going into Klaviyo -> Flows -> Create flow -> Create from Scratch -> click on Your Metrics (to select what will trigger the flow) -> API select the desired metric.
You should see at least some of the following metrics there: 
- Started Subscription 
- Cancelled Subscription 
- Reactivated Subscription 
- Renewed Subscription 
- Paused Subscription 
- Resumed Subscription 

Select the desired metric and click "Done" to continue configuring the flow. 
 

If you can't see these metrics there, then try to find them in Klaviyo -> Flows -> Create flow -> Create from Scratch -> click on All triggers (to select what will trigger the flow) -> search for "Subscription" in the box to select the metric. 
If you still can't see the metrics in there,  then it could be that these events weren't yet triggered in your shop. For example, the cancellation event can be triggered by cancelling one of the subscriptions in your shop. After you do that, the event will be sent to Klaviyo in a few minutes.
You can then resume this same subscription, create a new subscription in your shop, etc. and these events will all show up in your metrics in Klaviyo a few minutes after they occur ;) 

If you also turned on the feature to send the magic subscription link to Klaviyo, then you can use it like that: 
<a href="{{event.SubscriptionMagicUrl}}">Click here to edit your subscription</a>