Helo.Have some problem. No unlocked bootloader after autorization. Credit is lost, but no result on unlock bootloader operation

Scanning for Qualcomm HS-USB QDLoader 9008 device...

Download Port: Qualcomm HS-USB QDLoader 9008 (COM20)
Connection status: EHCI:HUB:HUB:USB 2.10 High-Speed
USB Driver: [Qualcomm Incorporated] qcusbser, version: 2.1.2.2, date: 3-25-2016
Initializing...
MSM Serial number: 0x8835bf55
MSM HW ID: 0x0008c0e1 (SDM660)
OEM Public Key Hash: 0xa7b8b82545a98eca23d6e9105fb464568d1b5828264903441bdef0cd57e3c370
SBL SW version: 4
Firehose: prog_emmc_firehose_Sdm660_ddr.elf
hash: 534885a22457a463cb7a3668c7028e7e057643a0, size: 652.70 KiB
QC_IMAGE_VERSION: BOOT.XF.1.4-00262-S660LZB-1
IMAGE_VARIANT: Sdm660LA
OEM_IMAGE_VERSION: c4-miui-ota-bd06.bj
Sending firehose loader... Done
Handshaking...
Sending ping... Done
Binary build date: Aug 8 2019 23:14:28
Chip serial num: 2285223765 (0x8835bf55)
Sending configurations...
ERROR: Only nop and sig tag can be recevied before authentication.
[SERVER] XIAOMI_FL [violet,8835bf55] ref id: XF01114102802, cost: 4, your balance: 6
TargetName: MSM8996
MemoryName: eMMC
DateTime: Aug 8 2019 - 23:14:28
Version: 1
Firehose configured.
Storage type: eMMC
Manufacturer ID: 0x15 (Samsung)
Product name: DD68MB (0x444436384d42), rev: 0x02, serial number: 0x6639C44F
Capacity: 29.13 GiB(31,281,119,232 bytes)
Boot1: 4096 KiB
Boot2: 4096 KiB
RPMB: 4096 KiB
User area: 29.12 GiB(31,268,536,320 bytes)

platform: sdm660, cpu abi: arm64-v8a
manufacturer: Xiaomi
board: sdm660, name: lavender
brand: xiaomi, model: Redmi Note 7
build id: PKQ1.180904.001, version: 9 Pie (PKQ1.180904.001) (MIUI10)
build description: lavender-user 9 PKQ1.180904.001 V10.3.6.0.PFGEUXM release-keys

[Xiaomi, ugg] Unlock Bootloader... Done

C:\adb>fastboot oem device-info

...
(bootloader) Verity mode: true
(bootloader) Device unlocked: false
(bootloader) Device critical unlocked: false
(bootloader) Charger screen enabled: false
OKAY [ 0.003s]
finished. total time: 0.003s