Failed-Forbidden...impossible to download.
itch.io is not great with file over 1GB if you are from EU.
I have uploaded the demo to Game Jolt - https://gamejolt.com/games/grandguilds/359920
Let me know if it works for you. Thanks!
A big thank you and already pledged on Kickstarter :)
It was a torture to not be able to download the Demo...your game look just AMAZING!!!