I have installed your plugin for use on the wordpress site (which is not published yet). Initially, the plugin worked fine, and I was able to set fonts and sizes with no problem. But somehow, one of the items in my navigation (and its dropdown children) was set to a smaller size, and I cannot change it back. I try to select the one navigation item and change the font, click save, and x out of the plugin. But the page does not automatically refresh. When I refresh the screen, a box pops up that says "Unknown Error:", with no additional information. I click okay, and a second box pops up saying "Unknown Error: " and a check box to "Prevent this page from showing further dialogs". The page refreshes, and nothing has changed.
I've tried to deactiveate/delete and reinstall/activate the plugin, but it doesn't make a difference.
Here is the site that I've been working with:
Can you please tell me what the problem is? Please also know that I am not a web developer and have EXTREMELY limited abilities in CSS and PHP. Any help you can give is greatly appreciated!