That's by design โ Vesper Protocol is a landscape-only game on both iOS and Android. Turn your device sideways; it won't follow you into portrait.
Progress, unlocks, and best runs are saved only on your device โ there's no account or cloud save. Deleting the app, or restoring a device from a backup made before your last session, can lose it. Reinstalling alone (without deleting first) keeps it.
Leaderboard entries aren't tied to an account, so we can't look one up by anything but what you tell us. Email us the callsign, region, and roughly when you posted it.
Tell us your device model and OS version along with what you were doing when it happened โ that's usually enough to reproduce it.