Bill, on the upper right of the WikiTree pages, click on the Add button. The first item in the drop-down box is DNA. Click on that. A page will open where you can enter your DNA test information. Since you tested on Ancestry, just enter that and then there will be a place to enter your username on Ancestry. Before you leave that page, be sure to Save. Give it a few hours to show up on your profile and about 24 hours to show on any ancestors you have entered.