To the Klaviyo Support Team,
I'm reaching out to report an issue I encountered while subscribing profile to a list using the Subscribe Profile API (v2023-09-15). Although I received an "Accepted" response with a status code of 202 from the API, I stopped receiving confirmation emails when trying to subscribe to a list with double opt-in enabled, even though the initial attempts were successful.
I kindly request your assistance in investigating and resolving this matter promptly.
Thank you for your attention to this issue.