My Prezi's autosave has crashed and so the last save was on my first slide - can I recover my slides?

Hi!  The autosave button at the top of the screen is continuously turning but isn't actually saving as when I go to share the Prezi, the copy that comes up is a very early draft consisting of only one slide - is there any way to fix and restore my work so far? I still have it open online, it just won't save or share the current version.

Thank-you!