Report Typo Answered
This "Digitial Graphics" catagory seems to be a typo to me?
I looked up in the dictionary, but could not find this words anywhere.
There were on three different places, on the Publish page, where we neede to select catagory before submiting our instrucatble, under the Technology->All Channels->Digitial Graphics, and on iOS App. under Explore->Choose a catagory->Choose a Channel. (as shown below)