Weird Bug in SetApp Version?

Weird error. When I first open touch tool and try and configure a trackpad option, it shows "Null" in the display window

Example here

If I try and add another Trackpad action, it keeps repeating the Null area.

I have removed app and reinstalled same behavior after trying to add initial action. Anyone have any suggestions on how to make it work correctly?

looks like your BTT database got corrupted somehow.

I'd recommend to reset it by deleting this folder ~/Library/Application Support/BetterTouchTool (go there via Finder => Go => Go To Folder (make sure to include the ~)