LG M150 AT&T Fail unlock with server ?

LG M150 AT&T Fail unlock using server and 5 credits ?
and now I got this message :

Phone is permanently locked and can not be unlocked ?

Checking Login and Password... OK
Ballance: 30 crd.
You have 30 credit(s) left. This operation takes 5 credits.Continue? Yes
Check adb server status... OK
Checking phone at COM75
Detected ID: 0000100C (MSM8909)
SW Version: MPSS.JO.2.0.c1.2-00020-8909_GEN_PACK-1.92496.1.104247.1
Reading ESN... OK
Read SPC...
SPC: 000000
Unlock SPC... OK
Backuping RFNV... OK
Backuping Feature Mask... OK
Backuping NV Item... OK
Backuping NV Item SIM1... OK
Backuping NV Item SIM2... OK
Backuping Provisioning Item Files... OK
Phone mode is NORMAL
Switch to DOWNLOAD mode
Phone detected!
Read security zone...
Laf Protocol: 01000005
Model name: LG-M150
Software verion: M15020m
Android verion: 7.0
Target operator: ATT
Target country: US
Chipset: msm8909
IMEI: 355932091249255
Save part1... done
Save part2... done
Save part3... done
Sec zone saved: ..\Backup\M150_355932091249255_13122018_151711.lgs b1
Detecting write method...
Init write method... fail
Init misc method... fail
Init sign method...
Execute sign method... done
Checking sign method... done
Reboot...
Phone detected!
Reading QCN file... OK
Port open fail COM75
Elapsed: 636 secs. --> (v9.59)

Please help me !