Hakuna Matte review for POWR Sales Popup, Email Pop up

I deleted your app because: 1) I could not understand how to integrate it with mailchimp on shopify (in your guide it shows only for wix) 2) I could not find contact support or it was too difficult to do it. Feels like you try to automize service, but in fact it just difficult to reach you 3) I do not understand if your product is free or not. What are the payments.