Where are my saved designs / templates ?

Your saved designs can be found by clicking on the menu option while viewing any of the thumbnail images.

If you click on any template set ('Social Media' , Logos & Business Cards... or any of the others) you will see some thumbnail images. In the menu area, click on the menu area (as in my screenshot attached here). 

You will then see 'My Designs'

that's where your saved files are 

Let me know if this helps