iTunes doesn't show all my iTunes playlists

Hello everyone,

for some time now, rekordbox doesn't show all my iTunes playlist / folders anymore. I don't think it ever has, but as my library grows and I need to create more and more playlists, it really is necessary for me to have more playlists shown in rb.

On iTunes:

On RB:

I Don't know why some playlists are missing, for example "Royals Cup" or "Song Requests". 

I have checked my iTunes settings and I have the setting "Share iTunes Library XML with other applications" checked and I don't know what else to do? 

Help is much appreciated! Thanks!!