If you go to Users->Your Profile in the admin dashboard is the ‘Show Toolbar when viewing site’ box checked in the Toolbar row? If not, make sure to check it, update your profile at the bottom of the page and then see if it starts showing up on the front of the site.
If that doesn’t work, please disable all plugins you have active and switch to a different default theme if you’ve done any customizations to Twenty Fourteen.
If that works, you can go back to enabling your Twenty Fourteen theme. If the issue doesn’t return, you can go back enabling each plugin one by one ensuring to test for the issue after activating each plugin.
Hope this will work for you.
Thank you very much. I will try.