A DataStore checklist for Roblox beginners: the 8 mistakes that wipe player data

<p>Player data in Roblox rarely disappears because DataStoreService is "broken." It disappears because a save ran with the wrong contents, or did not run at all. The eight mistakes below are the ones I keep seeing in beginner games — and in code that an AI assistant generates on the first try. They are not about leaderboards or monetization. They are about not overwriting a real profile with empty

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