Hello AramA -
Unfortunately, at this time, there is known issue with the Preview with the templates where at least one image must be included as you are working on the saved listing for the preview to display properly. We are aware of this issue and are currently seeking a solution and I will update this thread as soon as there is more information available regarding this.
The old templates are no longer available for selection. While it is possible to use Create Similar or use Save as New when working with an existing saved listing to utilize a template that had been saved to it, the old templates will not be available for selection on new listings. Please keep in mind that the new templates are of much more contemporary design and are both free of active content and mobile friendly. Also note that the design methods used for those templates are becoming outdated as far as browsers are concerned and over time would continue to encounter further difficulties.