Mail Chimp Not working properly

HI Whenever I put the email and try to subscribe on my website for the newsletter and after pressing the subscribe button it takes to me to new tab of mail chimp where it shows my details like address and other and ask for the confirmation to go and click in the mail received in the email account . I think before it wasn't like this . Any one facing the same issue?
Did you solve it? I have the same issue and could not figure out how to redirect to a page in my store. Also I did not receive any confirmation email.

Actually it is Double Opt-in By default means whenever Customer subscribe he get a mail asking him to confirm which is sad part and it also displays our complete address in that mail.