j260az lost unlock

[apostasy]

Hello!

I have unlock this phones few days ago, they worked but then lost unlock.

Do you know something about it?
If i do unlock again will it take credits again?

here is the log


Operation: Unlock
Selected model: SM-J260AZ
Software version: 36.2

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-J260AZ
Android version: 8.1.0
PDA version: J260AZTUU1ASA1
CSC version: J260AZAIO1ASA1
Phone version: J260AZTUU1ASA1
Product code: SM2J260AZKAAIO
CSC country code: USA
CSC sales code: AIO
Phone SN: R28M31KWBJZ
IMEI: 352453101791874
HW version: REV1.0
RF cal date: 20190318
Chip name: EXYNOS7570
Modem board: SHANNON305
Security patch: 2019-01-01
Boot Warranty bit: 0
SIM State: ABSENT
Initialization zTool... OK
Running zTool, please wait... OK
Reading data from phone... OK
Searching server... OK
Checking server answer... OK
Executing... OK
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, please wait... OK
Reading data from phone... OK
Rebooting phone... OK
Unlock done

and some screenshots