I think house numbers on segments are restricted to L2 editors, so lowering the segment won’t help you. But I lowered it so give it a try.
However, you can also place a Residential Place Point. From the editor, you can simply choose from any category of place to drop it on the map, then, on the bottom in the left pane, there is a link “Convert to residential.”
You could also do it from your app. Just search for your address and hit “GO” (even if you’re already there), then take a picture and in the next screen select “This is a residential place” (top option) and follow the rest.
Let is know once you’re done and we can add the house number on the segment too if it didn’t work for you.