If you want to make sure your links are working in your email flow, you can take these steps to verify.
1: In your Klaviyo dashboard, navigate to "Flows" and the campaign you want to check up on.
2: Select the email that's sending the videos and click "View All Analytics".
3: Select "Recipient Activity".
4: Click "Recipients" and hover over one of your recipients to make the "Preview" button appear.
When you click the preview button, you'll view the email as if you're the recipient, so the email layout and links are exactly as your recipient received it. Now, you can click one of the links and verify that the video is showing properly.