If you're using a supported browser and don't have a problematic ad blocker but Scroll is still not working, check your browser's privacy settings. You may have chosen a setting in your browser that makes it hard for Scroll to work. This debug tool can also help, or follow the instructions below.
If you have "block third-party cookies" enabled in Chrome's cookie settings, you will need to add "scroll.com" to the allow list.
On your computer, open Chrome
At the top right, click More > Settings
At the bottom, click Advanced
Under "Privacy and security," click Site settings
In Site Settings click Cookies
Next to "Allow," select Add
If you've chosen "Block third-party cookies" under Site Settings > Cookies, you will need to allow scroll.com, connect.scroll.com, and static.scroll.com through. Be sure to make sure they're allowed—confusingly, they default to blocked, and you need to click on them and change cookies to "allow".
If it still doesn't work after this, it can't hurt to go to scroll.com and make sure you're logged in, since sometimes your login can get lost while tweaking these settings.
If you've chosen "Block all third party cookies" as part of a "Custom" content blocking setting OR if you're running a Firefox nightly build, you need to allow static.scroll.com and connect.scroll.com under "Manage Exceptions".
Go to your Firefox Preferences, "Privacy and Security", scroll down to "Cookies and Site Data", and click "Manage Exceptions", then add
If you have "block all cookies" enabled in Safari, you will need to enable cookies or Scroll will not work.
Go to Safari > Preferences, click Privacy and unselect “Block all cookies.”