SanDisk Clip Sport Plus Firmware 2.13 Download and Installation Instructions

I received my new Clip Sport Plus today and was unable to see my Audible books on the device (although they look like they’ve downloaded just fine from Audible).  

I just did the firmware update and re-registered my device on Audible and downloaded them again.  STILL can not see any of my books on this device.  

Any suggestions or help would be greatly appreciated.  I’ve been searching the web for an hour but all the similar problems were on older versions and from 2008 and 2011.