SOS....BLOG html HELP NEEDED!

I posted HERE about the new post "separator" that Dawn from Lydia and Pugs made for me.  I Googled to find out exactly how to insert it.  I followed those directions, and on the preview it showed up beautifully.  A little row of westies separating each blog post, rather than the white line. 

However, when I published/saved/whatever...it didn't work :(  The line of westies only showed up after the first two blog posts.  AND THEN...when I would scroll down to see if they continued, and then back up to the beginning, the westies after the first two blog posts disappeared too!!!

What am I doing wrong?  Have you any ideas?  I've paid to have these precious little pups created and I so desperately want to use them.

Any ideas you have would be most appreciated!!

xoxo,
T