You can use a compression application to turn it into a “zip” file.
Note that the size should not exceed 4MB, less is better of course.
If everything fails, I can set up an upload link, which I will send you to your Cineversity Private Message address, for security.
Dropbox is pretty much the preferred option here. (I’m not very comfortable with other more or less un-known cloud services [except the industry standard Amazon], I really don’t know what I download from “new” services, so I use always a second computer to do so, which is not really a nice workflow. So, please - if possible, zip, or ask for an option, perhaps set up a Drop Box Account)
All the best