If you are accessing the download page on WeChat, please ensure that you follow the instructions and open the page with your device browser before downloading the APK.
Settings > General > Device Management and click Trust LCJG Limited
After that is done, return to the home screen and open Shop Dash Go!
If problem continues after setting the permission, you may need to logout of Yammer from your device browser. Open www.yammer.com on your device browser and logout of Yammer, then return to the app and try again.
Some accounts on the ijam network may not be allowed to request an OAuth token for the app, please contact your IT department to request for opening the permission to request for an OAuth token for the login process.