J727t1 b3 not unlock via server

Operation: Unlock
Selected model: SM-J727T1
Software version: 33.7

Checking Login and Password... OK
Ballance: 15 crd.
You have 15 credit(s) left. This operation takes 5 credits.Continue? Yes
Waiting ADB device... OK
Reading phone info...
Model: SM-J727T1
Android version: 7.0
PDA version: J727T1UVU3ARF1
CSC version: J727T1TMK3ARF1
Phone version: J727T1UVU3ARF1
Product code: SM2J727TZKETMK
CSC country code: USA
CSC sales code: TMK
Phone SN: R28K71EKE1F
IMEI: 35784709338XXXX
HW version: REV0.7
RF cal date: 20180719
Chip name: EXYNOS7870
Modem board: SHANNON315
Security patch: 2018-06-01
Boot Warranty bit: 0
Searching Samsung diag port... detected COM509
Reading phone info... OK
CP version: J727T1UVU3ARF1
CP build: Jun 28 2018 13:35:13
Reading data from phone... error (1)
Done with Samsung Tool PRO v.33.7