You are referring to the Browser in the Manage Section, in V2 SambaPos
OK, you need to change the address in Samba.Modules.SettingsModule\SettingModule.cs - its currently set to
http://network.sambapos.orgYou will also need to change the relevant resources.resx file in Samba.Localization to change the working for SambaPOS Website to say Support Site.
You may also need to change the Turkish in the browser window, this is hard-coded so you will need to edit BrowserView.xaml
Hope this helps.