Safari 17.0+ requires Blocker to have full disk access to check if the Safari extension is enabled properly. This is the only reason this permission is used.
STEP 1
Click the Apple logo in the top left corner of your screen and then click System Settings...
STEP 2
Select the Privacy & Security tab on the left. Then, click the Full Disk Access list item on the right.
STEP 3
In the list of apps, find Cold Turkey Blocker and enable the toggle on the right.
This permission is only used to make sure the Safari extension is installed during locked blocks.
STEP 4
Enter your macOS administrator password (if asked) and then click the Quit & Reopen button.