Snap Inc.\u2019s flagship platform has lost some luster, at least according to one social-media influencer in the Kardashian-Jenner clan. The Snapchat parent\u2019s shares sank as much as 7.2 percent Thursday, wiping out $1.3 billion in market value, on the heels of a tweet from Kylie Jenner, who said she doesn\u2019t open the app anymore. Whether it\u2019s the demands of her newfound motherhood, or the recent app redesign, the testament drew similar replies from her 24.5 million followers. Wall Street analysts too, have begun to notice, citing recent user engagement trends noticed since the platform\u2019s redesign. Citigroup analyst Mark May downgraded the stock to sell from neutral earlier this week after seeing a \u201csignificant jump\u201d in negative reviews of the app\u2019s redesign. He expects the reviews could cause user engagement to fall, hurting financial results. Meanwhile, as the app takes criticism, Chief Executive Evan Spiegel may become one of the highest paid executives in the U.S. After the company\u2019s IPO last March, Spiegel got a $636.6 million stock grant that will be payable through 2020. "Still love you tho snap," Jenner hedged in a later tweet.