http://www.newsweek.com/ubisoft-uplay-down-support-ddos-attack-ac-odyssey-1155643

UPDATE: Ubisoft says the attacks have ended, but service may remain spotty for now.

Are you having trouble downloading Assassin's Creed Odyssey on Uplay? You aren't alone. It looks like Ubisoft's service is currently under attack, which is causing issues for many users.