Did you select the new Playlists to be synced in the Device Profile (Tools > Options > Portable Device Sync)?

Hi, a few days ago, I made about 10 playlists and I got them to sync with wifi to my phone. Now that I've made more playlists on the laptop, I tried to sync them on my phone with the sync now option in the app. A message comes up saying everything is in sync, but it hasn't synced the newly created playlists?

Many thanks