I know that there are/have been some threads concerning this, but just to bring it up once again the 30sec video for 30min ad-free music does not work. It might play 2-3 songs (not long enough for 30mins) and then there will be an add, or sometimes 2 adds in a row without a song in between. Hopefully this could be fixed.
(Also I don't know if there is a update difference between countries, but I'm from Finland and struggling with this. :/)