We integrate Kalviyo with shopify. We make Single opt-in setting. When customer subscribe from newsletter form its showing in shopify customer and Klaviyo profile but not linked to list.
Subscribed user from shopify website not showing in Klaviyo list

Best answer by stephen.trumble
Hey
Thank you so much for asking the Klaviyo Community for help with your signup form and list!
I have a couple of quick questions for you, Is the signup form from Klaviyo or Shopify? If it is a Klaviyo signup form, do you have it directed to the correct list? Often times the signup form is either a Shopify form which will not add profiles to Klaviyo unless you manually upload the profiles via CSV file or that the Klaviyo sign up form is directed to a different list than intended. From my experience, it is most likely that the newsletter signup form is from Shopify and you will either need to create a Klaviyo signup form or manually upload the profiles.
Hope this helps! Thank you for being part of the Klaviyo Community!
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