You have https protocol? Try this:
[Config:Main]
RootURL='http://www.praetoriaro.com/patcher/'
RemoteConfigFile='main.ini'
TimeOut=0
StatusFile='PraetoriaRO.dat'
DefaultGRF='info.grf'
ClientEXE='PraetoriaRO.exe'
ClientParameter='-1rag1'
FinishOnConnectionFailure=false
[Config:Window]
AutoResize=true
Style='none'
Width=500
Height=430
DragHandling=true
Background='images/bg.jpg'
FadeOnDrag=true
[Config:BGM]
File=
Loop=true
Volume=20
Directory=
[Config:Misc]
Title='PraetoriaRO Patcher'
HideProgressBarWhenFinish=true
[ProgressBar:bar1]
Width=310
Height=20
Left=22
Top=385
BackColorStart=$009DEEEF
BackColorEnd=$00C2F1F1
FrontColorStart=$006ED5B0
FrontColorEnd=$0080DDCA
FrontImage=
BackImage=
Hook='ProgressChange'
[Label:Status]
AutoResize = false
Width=310
Height=
Left=20
Top=365
Alignment='center'
FontColor=$ffffff
FontName = ''
FontSize =
Text=''
Hook='StatusChange'
[NoticeBox:Box0]
Width=310
Height=150
Left=20
Top=200
URL='https://www.praetoria.com//patcher/index.html'
[Button:Start]
Default='images/start1.png'
OnHover='images/start2.png'
OnDown='images/start3.png'
Left=383
Top=211
Hook='Start'
[Button:Exit]
Default='images/Exit1.png'
OnHover='images/Exit2.png'
OnDown='images/Exit3.png'
Left=383
Top=244
Hook='Exit'
[Button:Cancel]
Default='images/Exit1.png'
OnHover='images/Exit2.png'
OnDown='images/Exit3.png'
Left=383
Top=211
Hook='Cancel'