Local files not working on iPhone.

[Music-bookgeek]

I’m not sure if I post this here or what. So I’m just gonna post it here. I use local files to get music that isn’t  available on Spotify. But recently the local files songs haven’t been downloading. I’ve done the process befor so I don’t know what’s going wrong. I have premium, my computer and iPhone are on the same network. I am clicking the download arrow, or turns green, and an arrow appears next to my playlist, but it stays gray. I have redownloaded the app, but that only resulted in all my local files songs being undownloaded and not being able to be redownloaded. Was there a new update that prevents local files on iPhone or something else I missed? Or am I doing something wrong.