SEN2COR : After installation error

After following instruction from following weblink I am able to install sen2cor and run it .

However, the processing finishes in 0 seconds and it seems that correction is not working.

any idea what is root of error?

edited, misunderstanding…

Do you mean change Dem reference weblink? if yes then the scroll down menu does not show other option.
Or we need to download SRTM DEM tile for image?

sorry, I mixed something up…

You need to extract your data before you can run sen2cor.