iTunes Match only works on wifi
iTunes Match on iPhone 5 iOS 6 works perfectly well web I am on a wifi network. However when I leave that network or turn off wifi, I get a notification saying I'm not subscribed to iTunes Match, will skip through all the songs on that are currently in the queue and then disable ITunes Match from my phone. Once I turn back on wifi, or get back to a wifi area I can reenable iTunes Match and it works perfectly again. Today has been quite a weird day for iTunes Match. This was not an issue yesterday.