For months I have been using Spotify as my default music provider for my Echo/Alexa devices using the Spotify skill, and whilst it was pretty tempramental (such as sometimes not playing songs, playing the wrong song occasionally etc.) it was at least functional.

However, as of today I have acquired an Echo Dot and linked it to my Amazon account, and the Spotify skill seems to have completely stopped working. Asking the echo to play any song just ignores my settings and plays it through Amazon Music instead, and if I specify "on spotify" at the end it will just say that it can't find the song on Spotify. I have also tried relinking my Spotify account to no avail.