You were correct to be skeptical . I'm sure it's a scam, not from Wynn.
Got a new ebay scam the other day. An email that looked like an individual telling me he noticed I picked up the cash, but where is his camera. Pretty good scam, right, because the first thing you think of is that your ebay account was hacked and somebody is using it rip-off customers under your account. Unfortunately, for the scammer, the email was sent to my work email address, and of course, I don't use my work email address for ebay.
The email contained a phony link allegedly back to ebay to respond to that mail. Since I don't display html in email, it was very easy to spot the phony link.
-David