Google+ counter not working

Hi, the Google+ is not working properly on my site http://www.mesteducation.com. Is it necessary that one has to share the post and cannot just +1 a post? Moreover I did a test: I signed into Google+ and clicked on the +1. It asked me to share the post. I didn't share, but closed the Google share page. It still didn't show the +1. Then I logged out of the Google+ and came back to click on the +1 button. It still showed me logged in with the sharing option, but won't share anymore even when I refreshed, closed-opened the page. It got stuck with the sharing option.