Please follow these steps in order to return DraftSight to use the default settings:

1. Ensure that DraftSight is not running.
2. In Windows, open a File Explorer window and browse to this location: C:\Users\[username]\AppData\Roaming. If the AppData folder is not visible, it can be shown using the folder options in the File Explorer options :  View > Hidden Items
3. Locate the folder called ‘DraftSight’.
4. Select it with the mouse and then click the right mouse button and select ‘Rename’. Type a new folder name : DraftSight_old
5. Restart DraftSight.

The next time you launch DraftSight, it will generate fresh user settings.

A full description of this process is available in the DraftSight Community in this Wiki post:

https://r1132100503382-eu1-3dswym.3dexperience.3ds.com/#community:51/wiki:xeoukthsQfKaCFG_cU9IxA

If the link does not direct you to the post, copy and paste the link into your web-browser address bar.