I cant unlock bootloader (ubl)

[soniqsxyro]

My phone asus zenfone 2 ZOOAD(ZE551ML) , use apk Unlock device tool written "An uknown eror occurs,which may be a network connection isue.please wait and try again later"
I try again until x10 still like that, please help

[Karen_ASUS]

Hi @soniqsxyro
Since Zenfone 2 is a 7-year-old model, it will no longer be maintained. Sorry for the inconvenience.