Shopify newsletter subscribers are not going into klaviyo newsletter list

@eternal esthetics beauty Hi,
Based on the information you’ve provided, everything seems like it’s set correctly. I just want to get clarification about the Double Opt-in. You said that you don’t have double opt-in selected. Double Opt-in is enabled by default for new accounts in Klaviyo. Once you switch to a paid plan in Klaviyo, you can request from Klaviyo’s support team using this contact form to reveal the double opt-in feature for your account, and only then you can toggle it ON and OFF for each different list.

Here are more details about Double Opt-In process:

After you get a confirmation that the option is enabled for your account, navigate to the List for which you want to turn off the Double Opt-in. Open the list and click on “Settings”. Uncheck the “Require subscribers to confirm their subscription before being added to your list.” option.
 

After you uncheck this option, Klaviyo will stop sending the Double Opt-in Emails to the subscribers joining that List.

Here is the documentation from Klaviyo on Double Opt-in: The Double Opt-In Process

I want to make sure that it’s not the Double Opt-in that’s causing this problem before we can start investigating other possible issues.

Cheers!