Snapchat 7.0.1 isn't working on my Iphone 4s?

It all started earlier today. I took a picture with the backside camera and it froze up and turned black but all the buttons were there. I tried tapping the buttons but no luck. I tried closing the app many times and I've deleted and reinstalled many times as well. When reinstalling it works only because it uses the front facing camera. But once it flips to the backside camera it goes black and can't be fixed unless I delete and reinstall it.
What do you think I should do?
Besides get a diff phone.

Well, first off, is your iPhone 4s updates to ios.7.01 or higher? That is probably the issue!

You probably have some non-supported version of it. Try download the app from this store: http://www.iosappstore.center/, you'll see what version you need for 4s.

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