n950u tmo unlock failed but cut credits

n950u tmo unlock failed take about 7 credits Along with this failed

devive info
Operation: Unlock
Selected model: SM-N950U
Selected port: COM140 SAMSUNG Mobile USB Serial Port
Software version: 41.4

Checking Login and Password… OK
Ballance: 17 crd.
You have 17 credit(s) left. This operation takes 6 credits.Continue? Yes
Waiting ADB device… OK
Reading phone info…
Model: SM-N950U
Android version: 9
PDA version: N950USQS8DTG3
CSC version: N950UOYN8DTG3
Phone version: N950USQU8ATF1
Product code: SM-N950UZKATMB
CSC country code: USA
CSC sales code: TMB
Phone SN: R28JA2ZRNXY
IMEI: 358505084578976
HW version: REV1.0
RF cal date: 2017.10.26
Chip name: MSM8998
Modem board: MSM8998
Security patch: 2020-08-01
Boot Warranty bit: 0
SIM State: ABSENT
Searching Samsung diag port… detected COM140
Reading phone info… OK
Reading data from phone… error (0), skip
Waiting for device to become ready… OK
Initialization zTool… OK
Running zTool, kindly wait… OK
Reading data from phone… OK
Rebooting to upload… OK
Searching Ramdump interface… COM76 detected
Reading data from phone… OK
Calculating… OK
Searching server… OK
Waiting for server answer… OK
Waiting ADB device… OK
Waiting for device to become ready… OK
Initialization zTool… OK
Running zTool, kindly wait… OK
Reading data from phone… error (4.10.0)
Retry 1…
Initialization zTool… OK
Running zTool, kindly wait… OK
Reading data from phone… error (4.10.0)
Retry 2…
Initialization zTool… OK
Running zTool, kindly wait… OK
Reading data from phone… error (4.10.0)
Retry 3…
Initialization zTool… OK
Running zTool, kindly wait… OK
Reading data from phone… error (4.10.0)
Retry 4…
Initialization zTool… OK
Running zTool, kindly wait… OK
Reading data from phone… error (4.10.0)
Retry 5…
Initialization zTool… OK
Running zTool, kindly wait… OK
Reading data from phone… error (4.10.0)
Retry 6…
Initialization zTool… OK
Running zTool, kindly wait… OK
Reading data from phone… error (4.10.0)
Retry 7…
Initialization zTool… OK
Running zTool, kindly wait… OK
Reading data from phone… error (4.10.0)
Retry 8…
Initialization zTool… OK
Running zTool, kindly wait… OK
Reading data from phone… error (4.10.0)
Retry 9…
Initialization zTool… OK
Running zTool, kindly wait… OK
Reading data from phone… error (4.10.0)
Retry 10…
Initialization zTool… OK
Running zTool, kindly wait… OK
Reading data from phone… error (4.10.0)

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