Have you tried working through some of the documentation available from the Support website? There's a dedicated Mobile site here: https://www.tableau.com/support/mobile.
For example, an overview of SSL-related issues is available from this article: Connecting Tableau Mobile to Tableau Server Using Trusted SSL Certificate.
We've done a lot of work on our search system recently, so I'm confident you'll find most of the information you need without difficulty. If you do still have issues, the community will be happy to help. Remember, it always helps to provide our experts with as much detail as possible, and supplying a packaged workbook can be invaluable. There are some great guidelines published here. Doing this will often get you a faster reply.