error z3x consumed my credits and did not finish the process

hi i have problem with z3x
consumed the credits and did not finish the process

UNLOCK INSTRUCTIONS:
Unlocking using sever:
1. Power on the phone.
2. Tap 7 times on 'Build number' in 'Settings' - 'About phone' - 'Software information'
to enable 'Developer options',
go to 'Settings' - 'Developer options' and enable 'USB debugging'.
3. Connect the phone to PC with USB cable, install drivers if needed.
4. Select device in ADB settings.
5. Press 'Unlock TMB via server' button, write your login and password in window if it will appear.
(Login and password will be saved as default after first input and can be changed in settings.)

Operation: Unlock
Selected model: SM-J337T
Software version: 37.0

Checking Login and Password ... Ready
Ballance: 17 crd.
You have 17 credit (s) left. This operation takes 5 credits. Continue? Yes
Waiting ADB device ... Ready
Reading phone information ...
Model: SM-J337T
Android version: 8.0.0
PDA version: J337TUVS4ASD1
CSC version: J337TTMB4ASD1
Phone version: J337TUVS4ASD1
Product Code: SM-J337TZDATMB
CSC country code: USA
CSC Sales Code: TMB
Phone SN: RF8KC0LD3SM
IMEI: 352149100895001
HW version: REV0.7
RF cal date: 20181207
Chip name: EXYNOS7570
Modem: SHANNON305
Security patch: 2019-05-01
Boot Warranty bit: 0
SIM State: NETWORK_LOCKED
Initialization zTool ... Ready
Running zTool, please wait ... Ready
Reading data from the phone ... Ready
Looking for server ... Ready
Checking server answer ... Ready
Executing ... Ready
Reading data from the phone ... Ready
Calculating ... Ready
Looking for server ... Ready
Waiting for server answer ... Ready
Waiting ADB device ... timeout
Phone not found

Done with Samsung Tool PRO v.37.0

user: zsc_6CRvl5yp