title: Chrome webstore app not showing add to Chrome
body: <p>I've created an app and it has been published but it does not show add to Chrome when I check the page <a href="https://chrome.google.com/webstore/detail/online-notepad/jmnimaabpfgblbgkldcenjphclfadgkd" rel="nofollow noreferrer">Link</a>. Instead it shows just visit website. I am wondering what's going on.</p>
  
  <p>The manifest of the app is as follows, have I done something wrong?</p>
  
  <pre><code>{
      "name": "Online Notepad",
      "version": "4.1",
      "manifest_version": 2,
      "description": "Save your notes online for free and share them with friends!",
      "app": {
              "urls": ["https://notepad.pw/"],
              "launch": {
                      "web_url": "https://notepad.pw/"
              }
          },
      "icons": {
          "128": "icon.png"
      },
      "permissions": [
          "unlimitedStorage",
          "notifications"
      ]
  }
  </code></pre>