I've Jailbroken my iPhone now it won't work?

Okay. I installed a tweak to let me get free in-app purchases. I went onto the app store a bit later, however it wasn't working so I tried to restart my springboard. It worked, however I can't go onto my springboard. If I do, it just resets. I can't go into settings and the only way I can access an app is if a notification pops up and I tap it and unlock my phone. I tried to restore it (I saved a backup before jailbreaking it) , however I need to turn off Find My iPhone. I can't access it! I don't know what to do and I know Apple can't help me. Does anyone have any ideas?

My Phone:

White iPhone 4
iOS 7.1.2
Jailbroken w/ Pangu.

Added (1).

Added (2). - use this one

Connect it to iTunes

That is what should happen when you try to STEAL.

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