xiaomi redmi note 4: unable to acquire unlockinng bootloader permission
It is a known fact that ISP's are allocated a bunch IP addresses which are then dynamically distributed among the public so every-time you connect to the internet it is possible you allocated a different ip address and sometimes it might be the same (TRY whatismyip on your browser to see your ip address) so try the procedure using mobile data if it still doesn't work i would like to suggest you an unofficial method mentioned in xda and i request you to go through the entire thread