We're looking into the issue.
Are you on Android or iOS?
To answer this question, I'm on Android. I've been in email contact with a couple people, so I believe they have the information needed, but they didn't ask for my GooglePlay info.
I've already tried everything I could think of including deleting the data and cache, uninstalling the game, and reinstalling the game.
Unlike others who seem to see (-1) Gold for the costs, I'm showing the full Gold price for the characters. But my Bundle is still showing as Owned, and the characters are greyed out when I try to select them.
I'm rooting for you guys to get this fixed as soon as you can. I have the Physical version that I can play in the meantime, but I've really been looking forward to this digital version! It adds a level of ambience and story that didn't exist in the physical version.