Most recent playlists are missing.

[tmwtmp2000]

I have been using Spotify Premium on a mobile device only, until today.  A couple of hours ago, after installing Spotify on a Mac and using my Facebook login, I was missing several playlists.  I checked my phone and they were missing there as well.  I tried logging0out of both but the playlists are still missing.  How many? I'm not sure.  I do know that I'm only missing the latest playlists I had added.  This did not affect single songs that I added to older playlists.  Would someone be able to help get them back?  Thanks in advance!