A: Check the about section!
A: Check your internet connection or the apps have been revoked by Apple.
A: Try blocking ocsp.apple.com or use the ffapple.com method. You can also use the AltStore method to install without worrying about revokes, just press the blue "AltStore" button in the app to import the app into AltStore!
A: You can contact us on our Twitter account, you can follow us here!