Samsung S7 SD card issue

[Radhoste]

Hi, I have been using Spotify for a while now and have recently decided to move all of my music to the SD card. This works fine until I close the app once it has transferred all of my data. Which then when I restart the app doesn't have any of my music downloaded and if I look on Spotify's settings, the option to transfer to the SD card has disappeared. The only was for me to get the menu back is to restart my device.