Unlock fail and credits discount

Operation: Unlock
Selected model: SM-J337T
Software version: 33.8

Checking Login and Password... OK
Ballance: 20 crd.
You have 20 credit(s) left. This operation takes 10 credits.Continue? Yes
Waiting ADB device... OK
Reading phone info...
Model: SM-J337T
Android version: 8.0.0
PDA version: J337TUVU1ARDL
CSC version: J337TTMB1ARDL
Phone version: J337TUVU1ARDL
Product code: SM2J337TZDATMB
CSC country code: USA
CSC sales code: TMB
Phone SN: R28K5238MDV
IMEI: 354272094425847
HW version: REV0.7
RF cal date: 20180522
Chip name: EXYNOS7570
Modem board: SHANNON305
Security patch: 2018-05-01
Boot Warranty bit: 0
Searching server... OK
Checking server answer... OK
Initialization zTool... OK
Running zTool, please wait...
Start... OK
Initialization... OK
Generate and check client proof... OK
Verify proof by client... OK
Executing... OK
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...
Start... OK
Initialization... OK
Generate and check client proof... OK
Verify proof by client... OK
Reading data from phone... error (4.10.0)
Retry 1...
Initialization zTool... OK
Running zTool, please wait...
Start... OK
Initialization... OK
Generate and check client proof... OK
Verify proof by client... OK
Reading data from phone... error (4.10.0)
Retry 2...
Initialization zTool... OK
Running zTool, please wait...
Start... OK
Initialization... OK
Generate and check client proof... OK
Verify proof by client... OK
Reading data from phone... error (4.10.0)
Retry 3...
Initialization zTool... OK
Running zTool, please wait...
Start... OK
Initialization... OK
Generate and check client proof... OK
Verify proof by client... OK
Reading data from phone... error (4.10.0)
Retry 4...
Initialization zTool... OK
Running zTool, please wait...
Start... OK
Initialization... OK
Generate and check client proof... OK
Verify proof by client... OK
Reading data from phone... error (4.10.0)
Retry 5...
Initialization zTool... OK
Running zTool, please wait...
Start... OK
Initialization... OK
Generate and check client proof... OK
Verify proof by client... OK
Reading data from phone... error (4.10.0)
Retry 6...
Initialization zTool... OK
Running zTool, please wait...
Start... OK
Initialization... OK
Generate and check client proof... OK
Verify proof by client... OK
Reading data from phone... error (4.10.0)
Retry 7...
Initialization zTool... OK
Running zTool, please wait...
Start... OK
Initialization... OK
Generate and check client proof... OK
Verify proof by client... OK
Reading data from phone... error (4.10.0)
Retry 8...
Initialization zTool... OK
Running zTool, please wait...
Start... OK
Initialization... OK
Generate and check client proof... OK
Verify proof by client... OK
Reading data from phone... error (4.10.0)
Retry 9...
Initialization zTool... OK
Running zTool, please wait...
Start... OK
Initialization... OK
Generate and check client proof... OK
Verify proof by client... OK
Reading data from phone... error (4.10.0)
Retry 10...
Initialization zTool... OK
Running zTool, please wait...
Start... OK
Initialization... OK
Generate and check client proof... OK
Verify proof by client... OK
Reading data from phone... error (4.10.0)

Done with Samsung Tool PRO v.33.8