"This content is not authorized” Error
Yesterday I started my free trial of Apple Music and downloaded about 200 songs on my iPhone through Wi-Fi and it worked fine. Today I went for a walk and I could not play the downloaded music offline. Once I turn off both Wi-Fi and Cellular network I get an error: “Cannot Open: This content is not authorized”. Neither of songs downloaded to the phone works. However, if I turn my Wi-Fi back on, everything works perfectly fine. Does anyone know how to deal with it?
P.S. I tried to google the problem, but solutions suggested on this site did not work for me.
Thanks in advance for any help
iPhone 7, iOS 11.2, null