This service is for  Active Line,Active on another account
If your device is clean but this clean unlock service returns with the response below this service is for you

Supporteв

✔ Active Line

✔ Active on another account

✔ Imei Issue on Network

Not Supported

Denied (Unpaid Payments)
Denied (Non AT&T IMEI)
Denied (In Contract)! 
Denied (Lost or Stolen)
Denied (ACCOUNT_ACTIVE_60_DAYS)
Denied (Recently Upgraded)
Denied (Not following guidelines)
Denied (Device no longer supported)
Denied (Fraud)
Denied (Bad_IMEI_Cannot_Be_Unlocked)
Denied (Resubmit_after_24_hours)
Denied (GOPHONE_COMMITMENT_6_MONTHS)