Membership Activation

After a subscriber creates their account, the email is sent to them; however it doesn’t appear to be automatically activating the account once clicked to go to log-in. As when I try to log in, it re-directs me to the WP login page with a message that says ‘Sorry, this account is not active’. Am I going to have to ‘manually’ activate each account or is there a setting somewhere I’m missing?

Thank you!