combined Download .zip

Hi,

Thanks for contacting us here about this extension.

is it possible to have only one zip download file from different selected filetypes?

Yes, you should enable "Download file selection" option. So you can download the selected files as a .zip file.
For more information: https://www.joomunited.com/documentation/wp-file-download-documentation#toc-3-5-file-selection-download

Hope it helps!
Cheers,