Premium Stops playing music

[Jorge93]

Hello!

I have a Xiaomi Redmi Note 3 Pro, and have premium since 3 days,

I have downloaded my lists, to listen in an airplane or walking around without streaming, so i have Spotify on "flight" mode without any conections.

The thing is that after a song or two, in the middle of another, it stops playing music, and on the music display, instead of the name of the song, now "get online music" appears. 

Ive tried deleting cache and downloading my lists again, but the problem still goes on, there is no sence paying spotify if i cant listen to my lists offline 😞

Please help!!