Half of my presentation missing

https://prezi.com/p/edit/eipydf1ps-ap/
Last Saved on 4/22, about 3 PM.
Logged in today (4/23) to find half of the content missing?

Hello Catarina aroung 15.30 today 30th of October I have deleted some contents in the presentation can you please help me recoverit?

it’s urgent please

Please let me know and kindly check around 3Pm of today

SET IT BACK as it was yesterday night at 2 AM

please set it back as it was yesterday night! From Friday to today I have made changes and I need that by tomorrow early morning!!!