http://prntscr.com/GFY9Jw4eAyxU
Try hitting m->by distance first. Also try using a span of 1 instead of 4.
Hey RCooperArt
Further to the right along the status bar you should see the number of vertices, 10/11 is what it should read now, that means 10 out of a total of 11 vertices are selected, anything else and you have double vertices.
If this is the case merge by distance as Dwayne mentions above.