I reinstalled Spotify onto my laptop, and found that none of my songs were in neither my playlists or liked songs. However, when I went to readd my 200+ songs to my liked songs to my annoyance, I found that the songs were labelled as liked songs already (AKA the heart buttons were already clicked). No song from my Daily Mixes are available to listen to; they show up greyed out. Same thing happens when I try to listen directly from an artist's page.
The catch? When I use my phone's Spotify app, I can listen to everything just fine.
I'm seriously considering switching to YouTube for all of my streaming pleasures, Spotify really was my favorite song streaming service before all of this.