Doesn't let me download new songs after updating

Ever since I updated to 8.4.1 everytime I download an album and click to save to my music it would show that it was successful but it won't be in my playlist . I didn't have this problem until I updated it to .1 and that was a month and I haven't been able to use it successfully so I feel like I should get a extra month free and the problem should be fixed as well