You can just take a backup of all the files/folders from the Filezo data folder. To open the data folder, go to Filezo Settings, Advanced tab.
If you don't have access to Filezo , you can open the default data folder %appdata%\Conceptworld\Filezo on Windows. Copy this path and paste it in Windows search box or Windows File Explorer address bar and hit Enter to open it.
Ensure that you exit Filezo when copying files from the above mentioned data folder.