Unable to connect to the server. Please check your network

i tried several times thru few hours and always getting same rror..
i tried frp remove for p10 lite - WAS-LX1

SigmaKey v.2.28.04
819591813 Sigma dongle 2.28, Initializing...OK
Pack 1: Activated
Pack 2: Activated
Pack 3: Activated
--------- 2018-07-23 15:11:57 ---------
SigmaKey 2.28.04 HiSi: Remove FRP / Huawei ID
Phone model: WAS-LX1
Version: :WAS-LX1C432B209
Preparing...Unable to connect to the server. Please check your network.