This is so frustrating. I upgraded to premium a couple hours before a long flight to download offline playlists. I waited a while. Just wanted to download about 300 songs... the grey arrow appears but not the green one. Only when I click on a song and it starts playing does it download immediately. Do I need to go through and play every song for it to download?

I’m on an iPhone 7+, up to date Spotify app, I’m on 4g

the songs which do download play fine but when I want to download more playlists I can’t be bothered to go through this

i have tried: turning my iPhone on an off again; uninstalling Spotify (Apple just does that thing where it puts it in the cloud); deleting the cache in the iCloud settings bit after uninstalling (the app still shows up with the cloud logo rather than the get logo and then if I click it and redownload Spotify I’m already logged in with all my info!  I can’t seem to be able to do a hard reset of the app on my device because Apple won’t delete my personal info even when it says it has. 

Please help? I’m now paying for a service from Spotify that I basically can’t use