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The recently released iOS (and iPadOS) version 17.7.7 has a serious bug that affects most apps including Stage Traxx and Stage Cue. That version no longer stores app settings reliably. Every time you start an app the settings are reset to default.
Wait for a fixed version 17.7.8 and under no circumstances update to 17.7.7. Most apps (including Stage Traxx and Stage Cue) are unusable on that iOS version.
See here: https://discussions.apple.com/thread/256059474?sortBy=rank
Or google for iOS 17.7.7 broken.