I flashed a RAW image of and older version of Android (7.1.1) because Android 9.0 sucks; and the unlock tool worked without a problem. Was able to unlock and root straight away.
It says 'an unknown error occured, it maybe a network error, please wait and try again later'
Same problem for me :-(
"An unknown error occurs, which may be a network connection issue. Please wait and try again later."
Seems like another phone for the bin if i cant root it.
Maybe I should have waited for the HTC :-(
Hi Zafaralimansoori & Rickkk
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I'm getting the same error "An unknown error occurs, which may be a network connection issue. please wait and try again later". Did someone found a fix?
I need a little help.
Please tell us some basic information before asking for help:
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.
I bought a brandnew ZE620KL couple of days ago and updated OTA from Android O to P (WW_16.0615.1903.92)
Afterwards I updated manually and succesful by download from website to WW_V16.0615.2005.130
Afterwards I wanted to unlock my bootloader with both unlock app from website which did not work.
Error message: "unknown network error, please wait and try later "
I definitely want to unlock my bootloader
After checking with the relevant team, the issue is now under investigation. For people who purchased the device from authorized reseller, first hand device and never rooted or unlocked your device, please wait for my reply in this thread. Sorry for any inconvenience it may caused.
Same Problem. Trying to Unlock my old Asus Transformer TF300T . I have owned it since new from last 2011.
"unknown network error, please wait and try later "
Same Problem here I am not able to unlock my bootloader with the unlock tool. Please help as soon as possible.
This is my info:
Error message: "unknown network error, please wait and try later ".
For the unlocked tool issue, kindly wait for my reply. Sorry for any inconvenience it may caused.
It works for me. Thanks!
I too have the same issue for ASUS ZC550KL. The boot loader apk gives network error. The device has never been been unlocked before.
Thanks in advance.
It is not working for me. message is a bit different as before. Difference is now the message in brackets 
The unlock tool of ZE620KL is already fixed, requiring Android 9 system. Please refer to the passage above.