Here are the Mac Apps for our Clickfree that you can try to check and download:
https://downloads.clickfreebackup.com/ClickFree_v110.pkg - Latest Version
If this still does not work, please wait for an update because we have already extended this compatibility concern, especially the software versions for MacBook computers using the ClickFree/any USB drive. Don't worry as our Developers are now working on it and hopefully, we can provide the latest update at the earliest possible time.
Again, thank you for your patience and understanding.