The reason behind this is that Apple has revoked the app certificate. Because TweakBox makes use of expired enterprise certificates, it will crash when the certificate gets revoked, but they do usually update with new certificates. If you can’t download or verify TweakBox, the developers have not yet updated so delete TweakBox from your device and try again in a few hours’ time. Alternatively, like us on Facebook and click Following > See First for all the latest developer updates.