Using 1DVD Creator to burn movie from iMovie to disk

Although Dawnark says their software supports the following: 1DVD Creator is an easy-to-use DVD maker application for you to burn all kinds of videos into blank disc. It can help you to create the personalized DVD movies and make a DVD slideshow with your favorite music and effects. It supports almost all popular video formats to burn into a disc, such as AVI, MP4, MOV, M4V, MKV, FLV, WMV and so on. What’s more, 1DVD Creator supports all popular recordable disc types: DVD-5 and DVD-9, DVD-4, DVD+R, DVD-RW, DVD+RW, etc. Owning 1DVD Creator will certainly make you come into the focus of your family and friends in sharing all your personalized-burned movies!

And even adds: 5. Support burning videos into DVD from iMovie.

I followed the directions on their website: Firstly, export iMovie project to video files to burn iMovie project to DVD which only support M4V format. When an iMovie project is completed, select it and click "Share" at the top of the window in the Menu bar. And on the following list, choose "Export Movie...", and then a small window will show up. You can choose the route to store the videos and the format to save your iMovie project. Here you are suggested to choose Large or HD 720p to save iMovie project to high quality video for burning to DVD. The default output folder is Movies.

But when I play the disk, there isn't anything there; however the disk show 20,480 bytes used on the disk. I've tried many times and also tried to email them, but no response.

Any help here would be greatly appreciated!