You say its fine but its trying to attach the items to a character that doesn't exist anymore.
I deleted the character its attempting the early access/Preorder stuff to and I don't want to accept because I know for a fact that character is gone.
I'm also a little confused seeing as when I log onto the forums, he's still there, and one of my other characters is missing. I don't understand that.

I wish there were some sort of news on this? I'd like to go ahead and get this all taken care of today while I'm able but it doesn't sound like there's any devs around to answer?

edit: I'm not sure if this could be a reason, but if you're a returning character, your 1.0 characters might have become deactivated and not showing up? I hope this is the case.