The current upload tool is limited to 4G per file due to browser limitations, which might be fixed in future updates to those browsers:
Firefox bug references:
Chrome bug references:
The best work around is for you to store your file somewhere online that makes it accessible via a URL, and then use the 'Import from URL' button on https://promethease.com
- Dropbox seems to work well, but their free product is limited to 2G.
- Google drive is an option, but the URLs it generates require a google account to access, which the promethease.com software does not have. Instead There's a hack ( https://stackoverflow.com/a/47581609 ) around that by generating a Google Drive API key and embedding that in the URL, which produces a URL that does work without logging in (test it from an incognito/private window). The a direct URL with no login needed will resemble : https://www.googleapis.com/drive/v3/files/abc123def456/?key=ABC0987POIUQWERTYUIQWERTY&alt=media
- Magentacloud seems to work well
If you are aware of other suitable services, we'd like to hear about them.