Privacy & safety · What leaves your Mac
What is the “Anonymous activity reporting” row in the Services pane?
Short answer: It's a twice-daily report of two totals — space saved and space moved — with an anonymous machine tag. It never includes file names, folder names, paths or accounts, and it's skipped when you're offline.
It's the twice-daily report that lets Storage Studio show your lifetime totals. It carries just two numbers — how much space the app has saved and how much it has moved — plus an anonymous machine tag. No file names, no folder names, no paths, no accounts.
The row in Settings → Services shows whether the last check-in was recent (green) or the next one is still pending (yellow). Nothing is wrong when it's yellow; it simply hasn't reported yet.
The numbers are running totals kept on your Mac, so they can't be turned back into a list of what you did. If you're offline, the report is skipped and sent later.
See the Privacy Policy for the exact wording, and Services pane for the other rows.