Hey i was just wondering what rank you need to be to play expert or training mode. I’m class three now and my only option is casual
Uninstall and re-download the game in its current update and it should be fine again :)
EDIT: As Quantas Mentioned, Re-download or update Infinite Flight in its current update
You need to update your IF. It is not on the current version.
The requirements for Expert can be found here (Expert Server Requirement Changes), Training server is accessible to everyone however.
But as @Qantas737guy says - you seem to be running an older version of the app which is causing you only being able to see casual. Check App Store or Google Play Store for updates.