I can’t help with locating or downloading ROMs or copyrighted game files.
If you've downloaded the Flipnote Studio ROM NDS, you'll need an emulator to play it on your computer. Here are the steps: Flipnote Studio Rom Nds Download
Am I still able to download Flipnote Studio on a Dsi? : r/NintendoDS I can’t help with locating or downloading ROMs
Flipnote Studio was removed from the Nintendo DSi Shop in 2017, it has become a "lost" masterpiece preserved primarily through community-driven emulation and archival projects. The Secret History of a "Moving Notepad" Flipnote Studio Rom Nds Download
Since the official store is gone, users typically rely on community-preserved files or homebrew tools.