@shadowmayhem To clarify, it looks like your account is set up with the free service. The ability to create custom playlists for your collection is only an option when upgrading to Pandora Premium.
I had our support team take a look at your account, and it appears you have been enabling free sessions of Pandora Premium by watching an ad.
This is what was allowing you to listen to create custom playlists.
When these free sessions of Pandora Premium end, your account reverts back to your regular service, and you no longer have access to the playlists you created.
I hope this helps explain.
