Newbie with problem with looping. Have looked at 5 video and they all repeat the same resolve which

Newbie. Problem with simple looping. I have watched 6 different videos that state the same solution  which does not work for me. I have 11 images in footage and have set my ltime line at end of last image marker and hit the "N" key. It works for everyone but me and I have had other people try it without success. Cannot get my imagesl to loop.