credit consumed but unlock failed

hi octopus team have a good day.
today im facing this issue , proces shows error and credits consumed, i deleted username as u said on post instructions.

Connecting to server ...OK
Username:
Authorizing...OK
Checking balance...OK
Your balance: 100 credits.


**********
Checking data...OK
Platform: LG Qualcomm
Selected port: COM1268
Selected model: TP450
Reading info...
Model ID: LGMP450
IMEI: 357017-08-544356-5
Android version: 7.0
Battery level: 57%
Mode: Normal
Firmware compiled date: Jul 27 2017
Firmware compiled time: 05:00:00
Firmware released date: Aug 21 2017
Firmware released time: 12:09:44
SW Version: MPSS.TA.2.3.c4-00026-8940_GEN_PACK-1
IMEI: 357017-08-
SPC: 000000
Checking root access...
Initializing ADB...OK
Waiting for phone...OK
Phone is already rooted.
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Connecting to server...OK
Octopus smart card is present.
Checking smart card...OK
Username:
Authorizing...OK
Checking balance...OK
Checking operation...OK
Sending device information...OK
Get credits, needed for current operation...OK
Your balance: 100 credits.
To perform "Unlock" operation you need to have 100 credits.
Sending exploit...OK
Executing exploit...OK
Sending data to server...OK
Calculating. Please Wait...OK
Unlocking...
Unlock Failed
Please, reboot the phone and try again.
Rebooting phone...
Performed by 2.9.5 Software version.

*************

Connecting to server ...OK
Username:
Authorizing...OK
Checking balance...OK
Your balance: 0 credits.
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