Occasionally due to poor/intermittent network connectivity the Spotify music server may fail to retrieve the entire track. If this occurs, the MMS will advance to the next track.
Additionally if Spotify Login credentials have been changed after the MMS has been logged into a Spotify account, the MMS will be able to queue tracks but nothing will play. If you believe that internet connectivity is not an issue:
Confirm the Spotify Login credentials
Confirm that the Spotify account is a Premium, Non-Facebook account
Logging out of and back into the Spotify account on the MMS
If you have tried the following steps and your Spotify playback is still not functioning, please reach out to Support.
Open A Support Ticket
914-598-1647 x2