in the url/address bar of your screen paste
www.wikitree.com/wiki/ (your last name dash number)
When the screen opens inside the orange frame you will see your name, followed by a bunch of green characters. The second or third character, looks something like a comb. Click on this, it willl open your ancestorsback seven generations, just not in Tree form.
If you click on the first character, sorta like a bug, it will show you a tree back five generations. Or maybe more, mine show five.