Hello!
I created 1 opt-in form in Klaviyo sending subscribers to my Master List. Double opt-in has been disabled and switched to single opt-in.
For some reason when testing, the profile is added to Klaviyo but NOT the Master List. The profile shows up as ‘Never Subscribed’.
It works fine when double opt-in is enabled — but not with single opt-in. I can’t find an answer to this anywhere.
As a test, I set up a non-Klaviyo opt-in form directly in Shopify via the theme editor. When submitting an email to that form, it’s added to the Master List in Klaviyo as it should (as the integration is set up to receive and send data from/to Klaviyo/Shopify).
Any ideas on why the Klaviyo opt-in form isn’t subscribing users?