Where can I req a filter of a webbpage?

Hi,
I'm wondering where I can write a domain that pi-hole don't block the ads in?
Here in sweden flashback.org is big, and Pi-Hole can block the ads at the desktop version of the site.
But in the mobile version, when you visit flashback.org every ad are showing.

Use this guide to find ad domains (also use the dev tools to make the website turn into the mobile version)