Download the BattleForge Client and unzip it on desktop > Move to Program FIles(x86)
Now Move Ubdater.zip to that same folder and unzip. Start the game from SkylordsRebornUpdater.exe file and thats all.
If you have some errors with downloading its your internet/browser problems - not a upload service.
Try another browser or clear the cache of your actually with ctrl + shift + delete on opened browser.
Kind regards.