Unable to connect to the server. Please check your network.

SigmaKey 2.29.15 HiSi: Remove FRP / Huawei ID
Phone model: FLA-LX2
Version: :FLA-LX2 8.0.0.121(C636)
Preparing...Unable to connect to the server. Please check your network.
265138166 Sigma dongle 2.29, Initializing...OK
--------- 2019-01-07 19:36:35 ---------
SigmaKey 2.29.15 HiSi: Remove FRP / Huawei ID
Phone model: RNE-L22
Version: :System 8.0.0.046(0AGZ)
Preparing...Unable to connect to the server. Please check your network.

cannot connect continuasly
pls solve the problem
firewall ok my network