I'm located in China but i will first send you the saved presets i made with FormBuilder tonight so you can try to see if you can use them.
Formbuilder created 3 presets for me: Groups, Content and Design.
In the Design page window the name of my presets showup, also the 3 themes within that preset show up, but for some reason the preview windows shows nothing or the design is not compatible. Again i still don't understand how a design preset from FormBuilder is translated to the form pages created by DataAssist.
In what timezone are you?