J727t1 credit used two times

UNLOCK INSTRUCTIONS:
Warning! Knox warranty must be active (0x00)!

1. Power on the phone.
2. Tap 7 times on 'Build number' in 'Settings'-'About phone' to enable 'Developer options',
go to 'Settings'-'Developer options' and enable 'USB debugging'.
3. Type *#0808# and select 'DM + MODEM + ADB' (or 'DM + ACM + ADB').
4. Connect the phone to PC with USB cable, install drivers if needed.
5. Select device in ADB settings.
6. Press 'Unlock TMB via Server' button for direct unlock, 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-J727T1
Software version: 31.0

Checking Login and Password... OK
Ballance: 15 crd.
You have 15 credit(s) left. This operation takes 10 credits.Continue? Yes
Waiting ADB device... OK
Reading phone info...
Model: SM-J727T1
Android version: 7.0
Product code: SM2J727TZKETMK
Phone version: J727T1UVU1AQK8
PDA version: J727T1UVU1AQK8
CSC version: J727T1TMK1AQK8
CSC country code: USA
CSC sales code: TMK
HW version: REV0.7
Phone SN: R28JC2NG8LA
Chip name: EXYNOS7870
Modem board: SHANNON315
Security patch: 2017-12-01
RF cal date: 20171225
IMEI: 354254090761912
Searching Samsung diag port... detected COM616
Reading phone info... OK
CP version: J727T1UVU1AQK8
CP build: Nov 24 2017 17:24:45
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... OK
Rebooting phone... OK
Unlock done

Done with Samsung Tool PRO v.31.0