This is a very rare bug, it may be if you forgot to save when making changes in your Popup or changing the file name in Explorer, or there was a critical error while working with this Popup.
Try to reinstall Hand2Note:
1. Close Hand2Note.
2. Make a backup of your Config folder C:\Program Files\Hand2Note\Config
3. Uninstall Hand2Note using the control panel.
4. Restart your PC.
5. Delete the Hand2Note folder "C:\Program Files\Hand2Note".
6. Install
https://h2n-uptoyou.azureedge.net/ma...eInstaller.exe.
7. Copy back your Config folder
6. Run Hand2Note as administrator.