Hi mickaswah,
If you wish to export to CSV, please right-click the symbol and use the “Export to file” option. The “Download” option merely downloads the data (bi5) files from the internet so you can produce CSV files from it at a later stage via the “Export to file” option.
If you are still having difficulties, it is highly recommended to consult the Help manual by pressing F1 within the application. This gives information on how to export a CSV file.
Hope this helps.