HockeyApp is sometimes temperamental on iOS when installing or updating an app. If you see the 'Fluent' app icon but it just shows 'Waiting' or 'Loading' 'Installing' on that icon, tap it once or twice. It will pause and restart the download, and should complete within a few minutes.
If you've given it all the time in the world and it's still not installing,
- Delete the app from your home screen (LIGHTLY hold your finger on the app icon until all apps start wobbling. Then tap the X on the top left to delete it).
- Now reboot your phone.
- Once your phone is working again, open up HockeyApp (it has its own app icon), select the iOS Fluent Forever App there and tap install.
- If it's still taking a while, make 1000% sure that your internet is working well, and then give it a good long while (5-10 min) to download, just in case it's a connection issue.
- Try this process one more time. Then if it's still not working, we can go poke at HockeyApp and ask them why they're misbehaving.