I recently bought the Student Discount with Spotify and linked my HULU account to it. However, I decided that I wanted the No-Commercials Plan from HULU and when I tried upgrading it on their website it did not allow me. I went ahead and canceled the HULU subscription via Spotify (because I couldn't eve do that through HULU) but I still can't upgrade my HULU account.
As you will see in the picture attached, there is no Upgrade or Manage button in the HULU subscription page. I tried contacting HULU but they said that I had to get in touch with Spotify because they were the ones billing it.