Windows movie maker doesn’t show timeline at all

Hi,

I purchase don't a license for movie maker and I have been working on a video for three days straight now and I have recently saved the file and re-opened it, to find that there is no timeline to be seen making it impossible for me to work on my movie! Also the movie preview is completely black with no audio at all, it only shows pictures I've inserted into the movie. 

I have contacted Microsoft support  but I have not received a response. 

Can i please have help as this is very very important to me :( 

thanks!