Harrisburg University does not support the use of Adobe Connect for mobile devices, unfortunately.  We always recommend that students join from their laptop computer that meets the HU computer requirements:

That being said, many students are able to get the app to work, and the process that they follow is to go to the appropriate 'store' and download the Adobe Connect app.  Then they open their browser and navigate to their course in the LMS, open the 'Adobe Connect' link, and click 'join'.  Remember - you can't use the application directly.  You need to browse to your course and click the 'join' button.  Even then it is hit or miss on whether it will work for you.