Make sure you have the correct app.
If you have the iXpand USB 3.0 (this one) the app you need is called iXpand Drive. Latest version is 3.1.0
If you have the original iXpand (this one) The app you will need is iXpand Sync latest version 1.6.9. If this is the first time you are using it you may also need a FW update which can be done using a PC with the following FW update tool. http://kb.sandisk.com/app/answers/detail/a_id/17496/
If you are using the correct app and have the correct FW (for the original iXpand) start a new thread and post some screen shots so we can look into what may be causing the issue in your environment.
