credit lost J250G UNLOCK error

Operation: Read Codes via Server
Selected model: SM-J250G
Selected port: COM684 SAMSUNG Mobile USB Serial Port
Software version: 34.6

Checking Login and Password... OK
Ballance: 5 crd.
You have 5 credit(s) left. This operation takes 5 credits.Continue? Yes
Waiting ADB device... OK
Reading phone info...
Model: SM-J250G
Android version: 7.1.1
PDA version: J250GDXU2ARF2
CSC version: J250GTLP2ARG1
Phone version: J250GDXU2ARF2
Product code: SM-J250GZKATLP
CSC country code: Australia
CSC sales code: TLP
Phone SN: R28K51LWNFB
IMEI: 355738090331881
HW version: MP0.900
RF cal date: 2018.05.16
Chip name: MSM8937
Modem board: MSM8917
Security patch: 2018-06-01
Boot Warranty bit: 0
SIM State: NETWORK_LOCKED
Rebooting phone... OK
Waiting ADB device... OK
Rebooting phone... OK
Waiting ADB device... OK
Waiting for device to become ready... OK
Initialization zTool... OK
Running zTool, please wait... OK
Reading data from phone... OK
Searching Ramdump interface... COM16 detected
Reading data from phone... OK
Calculating... OK
Searching server... OK
Waiting for server answer... error







why....no refund???