On the "My Library" screen of the app tap the menu icon at the upper right corner of that screen (it looks like 3 vertical white lines), then tap "Refresh" to sync your library and refresh it with your latest purchase(s). Alternately you can swipe down from the top of the "My Library" screen to refresh/sync your library. Make sure you are connected to either wifi or your cellular data network before syncing. Without an internet connection it is impossible for the app to update.
 

 
If you do not see your new audiobook(s) in the list, make sure you have either "(No filter)" or "Not Downloaded" selected from the "Downloaded Filter" options menu, "(No filter)" selected from the "Completed Filter" options menu, and "Purchased Date (newest)" selected from the "Change Sort" options menu. You can find the "Downloaded Filter", "Completed Filter", and "Change Sort" options in the menu that appears after tapping the menu icon in the upper right corner of the "My Library" screen (it looks like 3 stacked white dots).
 
 
 
 
 
 
 
If this does not solve the issue please visit the FAQ page on our website (AudiobookSTORE.com) for other possible solutions or contact support.