Irig won't won't on garageband?

I've had the GarageBand app on my iPhone for over 6 months and haven't had a problem with it until just now. I just bought an irig that I planned to use to record my guitar that plugs into the headphone jack, but for some reason it's using the built in mic of the phone as the input instead of taking it from the headphone jack (irig) The only options under the input options (when at the amp select view) are monitor and noise gate. It's only recorded with the mic on the phone it's not even using the irig. I turned the moniter on, I enabled and disabled crosstalk, What do I do?

I hate those iRigs.

Just make sure you check the input/output on all the apps your using/system settings.

Maybe closing all the other apps your not using would help too; if they are open.

I don't know the "software" portion of it, but perhaps the amp select view isn't the only place to change the input.