I have been struggling since the last update of WP to get the full function of my TinyMCE. I have always used Ultimate TinyMCE plugin and it worked fine until the update of Wordpress. I am not sure if this is a canvas issue or a WP issue.
I followed the directions in your blog: https://premium.wpmudev.org/blog/display-the-full-tinymce-editor-in-wordpress/
and upon making those changes my site crashed and I had to remove it via the cpanel.
When I add functions on the UltimateTinyMCE editor, they are there but I am not able to see them. They are not visually available but the descriptions of the functions appear when I highlight them. It has been a real pain since that has changed with WP 3.9. Some of the functions, such as making tables, etc, were very useful and it is difficult now that they are gone.
If you have any insights, your help would be appreciated. I granted access yesterday for another question that I had so if that makes it easier, it is available. The site is digitalreachopm.com
Also, I am still awaiting an answer from a question that I had yesterday regarding a plugin not functioning on my site. DH Mega Menu Responsive Menus is not working at all. I have it installed and configured properly and the mega menu is not appearing. I am wondering if I just need to buy another plugin or if you know of any solutions. At the bottom of this document they give a direction to display the menu to the site but I am not sure where to add it regarding the php files. It is at the bottom of the page: http://www.savepageaspdf.com/84e8abafc2f1435f952230e0cae448ea/DH%20Mega%20Menu%20-%20User%20Guide.pdf
Thank you all so much for your help!