I have unquarantined the toolbox but the roadblock sign still shows.
I'm not sure what you mean by "toolbox." Make sure that the file being unquarantined is WOFF.exe
You probably need the entire path where WOFF.exe is located on your computer. Mine looks like this:
"G:\OBDSoftware\WOFF\OBDWW1 Over Flanders Fields\WOFF.exe"