Subscription Link going to Sitemap Page

When someone get the “Please confirm your request” email and clicks the link to confirm their subscription, it takes them to this page https://advantaclean.com/?s2=15281ea7c11c4705628e810b7c67bf1f41.

If I go in an edit the setting for “Set default Subscribe2 page as:” and point it to a subscription confirmation page I made, they never get the “Please confirm your request” email.

Please advise.

https://www.ads-software.com/plugins/subscribe2/