Troubleshooting & messages · Storage Studio itself
Why doesn't Storage Studio open when I sign in to my Mac?
Short answer: Opening at sign-in is switched off. Turn it on in More → Setup & maintenance, and check Login Items in System Settings. The background service runs at login regardless.
Opening at sign-in is a setting, and it's currently off. Turn it on in More → Setup & maintenance. You can also check System Settings → General → Login Items to make sure Storage Studio isn't blocked there.
The background service starts at login on its own, so routine tidying carries on even while the app itself isn't open.