IPhone 4S won't let me download apps?

Recently when I tried downloading any app, it will fully download, but it won't show the app on any of my home pages and when I try to click 'Open' on the app on the app store, it still refuses to open, how can I fix this? Also, a few days before it kept asking me every now and then randomly to reconfirm my password even when I didn't download anything and I would do it but it would ask me again later on till I ignored it, what's going on?

You jailbreak yet, break permissions

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