As of CrossClave v22, CrossClave users can now download files from the CrossClave application via the Download feature.
To do this, launch CrossClave and navigate to the files tab of the space where the file you want to share resides. Then select the ellipses inline of the file. Select the 'Download' option.
This will open a sub-window to select the location of where you would like to download the data. You will have to select a folder for the download, it will not download to the "Downloads" or "Desktop" for example. Review your selection and choose 'Continue'.
CrossClave will then begin the download to the specified location.