I'm fairly new to this but got the same message "Tap here to transfer media files". Yikes - I couldn't use Amazon Music since it's on my SD card. Here's what I did and it worked. Tap where the "Tap here ..." message is. You may have to pull down on Notifications to see the message. It will take you to My Files. Left hand side is Device Storage > SD card. On right side of screen is has SD card with nothing below it. But notice the + sign to the right. On the left, tap on SD card > Android folder. Then tap the + sign on upper right. That will put the Android folder in the directory structure on the right. Then make sure on the right you are in the main folder 'SD card'. Then on the left, tap the SD card > DCIM folder. Then tap the + sign on the upper right. That should move DCIM folder over and it should all work now. That should move the sub-folders too but check to make sure. If not, use the same method to put those in the appropriate folder. I also had an empty folder called Lost.Dir that I moved. I was disappointed I couldn't find the info anywhere about how to do this but I was able to figure it out anyway.