We ordered and just received this today. We pulled it out and started the Cinderella puzzle only to discover it was missing several pieces. I went and did some research over at the mother ship and apparently this is a somewhat common issue with these sets.
Well crap. I’m very sorry about that. Please reach out to Woot! Customer Service.
From a browser, use the Woot! Customer Service form.
In the Woot! App, choose Account from the bottom navigation and then Support.
Note: Woot! Customer Service replies go to the email address on your Woot! account, not your Amazon login email if used/different.