j727t unlock Credits gone , but still lock

You have 40 credit(s) left. This operation takes 5 credits.Continue? Yes
Waiting ADB device... OK
Reading phone info...
Model: SM-J727T
Android version: 7.0
PDA version: J727TUVS3ARE1
CSC version: J727TTMB3ARE1
Phone version: J727TUVU3ARA1
Product code: SM2J727AZKATMB
CSC country code: USA
CSC sales code: TMB
Phone SN: R28K428TSSB
IMEI: 355617084528290
HW version: REV0.7
RF cal date: 20180424
Chip name: EXYNOS7870
Modem board: SHANNON315
Security patch: 2018-05-01
Boot Warranty bit: 0
SIM State: NETWORK_LOCKED
Searching Samsung diag port... detected COM193
Reading phone info... OK
CP version: J727TUVU3ARA1
CP build: Jan 24 2018 13:02:34
Reading data from phone... OK
Calculating... OK
Searching server... OK
Waiting for server answer... OK
Waiting ADB device... OK
Initialization zTool... OK
Running zTool, please wait... OK
Reading data from phone... OK
Rebooting phone... OK
Unlock done

Operation: Unlock
Selected model: SM-J727T
Software version: 36.2