In both cases below you need to do WiFi setting on K518ISE key programmer:
1.First time use you need to configure WiFi to register and update
2.Device displays WiFi connection but cannot run an upgrade
Lonsdor K518ISE WiFi setting:
Select Settings->WIFI
Select www.lonsdor.com-2.4G
Tick Show advanced options
Set IP settings to Static
Change DNS 1 to 114.114.114.114
DNS 1 before setting
DNS 1 after setting.
Lonsdor Key Programmer K518ISE wifi setting is done.