Found a bug, or something not working the way it should? Email is the fastest way to reach me.
Email supportLetterboxd has no public API, so Flicker reads your public RSS feed instead, which only covers your last ~50–100 logged entries. It's a sync of recent activity, not your full watched history.
Either the username doesn't exist, or your diary is private. Letterboxd's RSS feed only exposes public activity, so a private profile has nothing for Flicker to read.
Each session mixes a random set of questions, and answers are combined into one search against TMDb's catalog. If your combined answers were very narrow, Flicker loosens the search once rather than showing nothing, so an occasional pick can be a looser match.
No. Every recommendation and search comes from TMDb's live catalog, so a connection is required.
Watched and Saved lists live only on your device. There's no account or cloud sync, so reinstalling the app or switching devices will not carry them over.