Hi @sendeats,
Thank you for sharing your question with our Klaviyo Community. And thank you @forman for your reply.
By default, Klaviyo’s back-in-stock modal will not display a full success message modal like a Klaviyo sign-up form. You should, however, see a green success note after entering your email into the modal and clicking “Notify me when available”. Can you let me know if you do not see this happening?
Additionally, we will not automatically close the modal after submit. If your profile is logging the “Subscribed to Back in Stock” event and is receiving the back in stock email, then as @forman mentioned, everything is working as expected.
Thanks and have a great day.