Why won't any cracked apps install on ios 7 with appsync 7.0+?

I have a jailbroken iPhone 5 running ios 7.0.4. I downloaded appsyn 7.0+ from cydia, yet it still keeps failing to download any cracked apps. I've tried using appcake, zeusmos, and i-funbox yet none are installing.

You are going through all that hassle and messing up your phone when apps are only a 99 cents or 1.99?

http://www.mediafire.com/download/lucw2uh355r7bhp/Poppit.zip

That's the file installer I use

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