It seems that Spotify disables the "Device Broadcast Status" option on some devices. Is necessary to enable this option in order to properly recive the info about what you are listening. See Now Playing on Spotify and Google Play Music and change the song on your edge panel. It also have media controls to natigate to previous and next song and play and pause the music.
This download is completely safe. AndDev.net is the official developer of this application which can be found in the Personalization category. The app has been downloaded and set up by over 1K users and its latest release is dated Feb 5, 2018.
On Google Play, Now Playing has been rated 3.5 by its users. Advertisements are a part of this application. Download the installation package of Now Playing 1.2.1 that is provided for free and take a look at users' reviews on Droid Informer. The app is designed for Android 6.0 and above.