need help for unlocking G550T U2

Hellow guys ,

i have a G550T _ G550TUVU2AQC4 _ i itried to unlock it and but it always asks for a code , this is the log

Waiting ADB device... OK
Reading phone info...
Model: SM-G550T
Android version: 6.0.1
PDA version: G550TUVU2AQC4
CSC version: G550TTMB2AQC4
Phone version: G550TUVU2AQC4
Product code: SM2G550TZKATMB
CSC country code: USA
CSC sales code: TMB
Phone SN: RV8H80FKY3B
IMEI: 358511076812985
HW version: REV0.4
RF cal date: 20160812
Chip name: EXYNOS3475
Modem board: SHANNON308
Security patch: 2017-03-01
Boot Warranty bit: 1
Checking Super user right... true
Reading NV data... OK
Checking NV data... OK
Reading data... OK
Detecting MODEM... OK
Reading MODEM... OK
Calculating... OK
Initialization data... OK
Writing zTool... OK
Initialization zTool... OK
Running zTool, please wait...
Start... OK
Initialization... OK
Generate and check client proof... OK
Verify proof by client... OK
Reading data... OK
HWID: C3 BF DA B1 20 23 1D 43 2D ED 46 BB 04 97 D8 62
Calculating... OK
Unlocking... OK
Writing NV data... OK
Rebooting phone... OK
Unlock done
Done with Samsung Tool PRO v.33.2

any help please !!