Cadbury has a marketing fail. And Snapchat redeems itself (somewhat) with creators: Tuesday Wake-Up Call

Welcome to Ad Age's Wake-Up Call, our daily roundup of advertising, marketing, media and digital news. You can get an audio version of this briefing on your Alexa device. Search for "Ad Age" under "Skills" in the Alexa app.What people are talking about todayCadbury, the chocolate brand owned by Mondelez International, ran a lighthearted, treasure hunt-themed marketing campaign in the U.K. that backfired in a big way; the campaign was decried as "irresponsible" and "intensely stupid." The brand