Yesterday, I was able to play my sycned offline songs without any issues.

Today as I use the app, all of my local songs are now greyed out and are unable to be played on mobile anymore. 

I tried re-downloading my songs, but when I set the slider to Download, the app simply displays "Downloading. Waiting to download." and nothing happens. 

My Phone: Google Pixel 3 XL

Random details:

- all local file formats are in MP3

- phone has over 20 GB of free space

- WiFi router's Plug and Play option is enabled

- songs that are native/already in Spotify download perfectly fine, just my local files won't download

- yes,  I am an active Spotify Premium user

- both Android Spotify and PC Spotify are at their latest versions

- mobile version: 8.5.14.752. Desktop version: 1.1.10.540.gfcf0430f

(both are latest versions as of 7/19/2019)

Things I have tried:

- completely uninstalling and reinstalling the Spotify mobile app AND desktop app

- disabling the firewall on my laptop

- setting the firewall to allow Spotify on both private and public networks

- uninstalling the Spotify mobile app and desktop app AND restarting both devices before reinstalling

- changing the directory in which the local files were imported

- clearing cache in the Spotify app

- connecting both devices via the same WiFi

- connecting directly to Mobile Hotspot instead of Wifi

- removing all my Offline Devices from Spotify

- tried importing royalty free music / unlicensed / etc

- tried using another premium account

Nothing seems to be working for me at the moment. Any suggestions you guys can make?