I've never seen anything so incredibly difficult to accomplish, where NOTHING that you try will work. You can type the symbol in the box & click on the '+' , but it won't react at all. Then you can try the "edit" button, which brings up your symbols with red 'x's in front of each symbol, and you still can't add any symbols, because your system simply doesn't respond.
And this is in both Chrome & IE8.
Your site provide NO email address, and you are forced to post in a forum? That's a ridiculous setup. Sending an email to email@example.com is returned as it doesn't exist!
Can't you even provide some basic email addresses to write to about problems, instead of putting your users through having to post in a forum to get help?
Customer support service by UserEcho