2026/03/02 ver.7.0.0 Removed the feature to save drafts that were not synced with the server

For more details, please refer to the following article.

Mobile App: Discontinuation of the Feature to Save Drafts Not Synced to the Server │ Released March 2, 2026
https://help.teachme.jp/hc/en-us/articles/53251580983705