ASUS - ZenTalk

Please tell us some basic information before asking for help:
Model Name: Zenfone 5z
Firmware Version: QKQ1.191008.001.WW_user_100.10.107.123_20210131 release-keys
Rooted or not: Not Rooted
Frequency of Occurrence: always
APP Name & APP Version (If your issue relates to the app): Unlock device bootloader app for Android 10
In addition to information above, please also provide as much details as you can, e.g., using scenario, what troubleshooting you've already done, screenshot, etc.
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No new system updates are going to get then why we don't have "Unlock device bootloader app for Android 10" ? Still there is Unlock device bootloader app for Android 9/P in the official support website.
???