Only takes a few minutes, so worth a look).
If you fall into the first camp that had previously claimed rewards then you're obviously doing things right and the servers are the problem here.
For Agent Origins, enter the code on the Ubisoft website whilst logged into UPlay then copy the next code which is the real code (should look more unique) and activate that on console.
If you regularly play Ubisoft games and already have a UPlay account then UPlay points will have been silently racking up under your profile.
For taking part in the Alpha or Beta: New York Shortbows Weapon Skin (Xbox Only).