What happened to iTunes match?

My iPhone can't even load music anymore? Crashes the music app constantly. Anyone else having this trouble and when's it going to work Apple? I paid money for the service and can't even use it.

If it does play it only plays for a few seconds then the music app just closes.

I'm running iPhone 4 on 5.1.1

It's really upsetting me, I'm stuck listening to radio stations with tunin radio pro because my own music is unaccessable.