What this means
Flipnote Studio received an invalid authentication response code.
Flipnote Studio received a response code from the sign-in service that it could not use. On RexiMemo this should be treated as a compatibility/server response problem once basic Internet and DNS are known-good.
What to try
- Retry once after restarting Flipnote Studio. A one-off failure can be temporary.
- If the DSi connection test succeeds, avoid changing unrelated Wi-Fi settings.
- If the same code keeps returning, contact RexiMemo support and include the complete code and the action that triggered it.