Do you see the Scroll bar? If not, then that site isn't a partner (why not tweet @ them?).
If you do see the Scroll bar and still see ads, report pages with ads by emailing support @ scroll dot com. Please note that YouTube and Vimeo don't currently allow publishers to remove the ads. Scroll requires an app to work in desktop Safari, and an app to work in iOS.
Below are examples of what the Scroll bar looks like.
On desktop, expanded, with light mode on a computer:
On mobile, expanded, with dark mode on iOS:
Just tap the X to minimize the Scroll bar, or tap the Scroll logo to expand it.