But, to be fair, I did not find any information on the Kickstarter page that would indicate that the digital game copies would be special.
It actually does. Here's what I can read on my account, what was promised:
"A Collector's Edition of Divinity: Original Sin 2 as a digital download for PC. [...] Includes the following digital rewards: manual, map, soundtrack, lore and art books, behind the scenes footage, design docs and story notes. " Aaaaaand, we just got the regular edition instead. Granted, I could still download the goodies on the Vault, but still. I don't think it's really acceptable not to deliver what was promised and say "nah it's okay, screw convenience, just figure out by yourself how to retrieve the goodies".