If the Excel file is downloading for you as a Zip file.
(e.g. Dreamteam_RndX.zip) then simply rename the file to
Dreamteam_RndZ.xlsx

You should then be able to open the file as intended.
If you try and open the file in the zip format you will be displayed
the broken parts of the Excel file which will have no meaning.

If you cannot see File extensions, then in your Windows Explorer
window follow the following

Tools >> Folder Options
Click on the "View" Tab

Untick the box named "Hide extensions for known file types"
Press Ok and you are good to roll.