There is no "Save a Copy" option

Prezi Classic Create/Edit
#1

I would like to take an existing project and “Save a Copy” so that I can make an alternate version while preserving the original. However, I don’t get the “Save a Copy” button on the presentation page http://prezi.com/ysvctii1wkai/music-around-the-world/ 
I’m pretty sure it has the right permissions

(See attached screenshot).

#3

I’ve tried Chrome on Mac OSX, Safari on Mac OSX, Chrome on Windows 10, and Edge on Windows 10. None of them give me the “Save a Copy” option.

#5

Change the license from Pro Minus to Public on my account, because I can not work normally.

#12

I’m not able to copy this presentation either. HELP PLEASE!