This app may not run properly after installation because the certificate is expired.
Please check if you have already installed the same app from the App Store, if so, the same file cannot be installed again due to the security behavior by Apple in iOS 8 or above. Delete the app from the App Store and you will be able to install the .ipa file from AppPure.
Go back to the homescreen to see if the app icon is already there. After iOS 8, there is no notice on Safari when the app is in process in the background.
a. The profile is expired.
b. The device's UDID or iOS version is incompatible with the app.