Apple recently released an update to ITP 2.3 (formerly denoted as ITP 2.4) on iOS and macOS. This blocks the way the original version of Cookie Saver works.
We have now released a new version of Cookie Saver, which also works with the latest update to ITP 2.3. The new version can be found here.
To continue using Cookie Saver, you must migrate your setups to the new version. Please take a look at our migration guide for more information.
Existing Cookie Saver setups are still active and working in Safari for user on older versions of iOS or macOS, but will be shut down on February 28, 2021. Make sure to migrate your setups before then.