IPhone apps downloaded from third party closes immediately after I open them?

I downloaded apps from a third party store called hipstore. The apps worked perfectly, but recently when I try to open them, they immediately close. I tried restarting my phone(holding the lock and home button together)updating my phone s software, redownload the app but nothing is working. Other apps that are downloaded from the App Store is working perfectly though. Someone please help. Oh yea and also I can't download apps from safari like gba4ios, when I try it says unable to download app at this time.

Could be that the developer didn't update the app to be compatible with the latest update to the iOS. Or they did, but you haven't updated. Go on the app store and find the link to contact the developer. Ask what's up.

Apple protects your device from unauthorized and potentially dangerous scripts. They are constantly updating their "suspicious apps" database.

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