My prezi disappeared :(

I created my Prezi few weeks ago and now I can't find it. It's very important for me, because I want to make there some modifications. Prezi was available under: http://prezi.com/1rqbv612jsg6/modelowanie-procesow-biznesowych-postepowan-administracyjnyc/ Is there any possibilities to find it?
I need it for my thesis presentation - pleeeaaaseeeee help!