Accept Invite Button Not Working

I was invited for a campaign and went to accept the invite, but when I click the "Accept" button, it doesn't work. The button apears to have been pressed, proving that I'm interactivng with it, but no further commands appear, and in my games list it doesn't show that I'm in the game, nor does it show in the Campaign Players page.

Before we dive into the guts of the issue, we're going to need you to do a few things for us, things that sometimes fix issues for users before more extensive troubleshooting is needed. Can you please follow Steps 1-3 of our Solving Technical Issues wiki page (temporarily disable all browser add-ons and extensions, temporarily pause any anti-virus, and try switching browsers (for Chrome/Firefox specific issues) ) to see if one of those components is causing the problem. If one of those does fix the issue, just let us know :) If none of that resolves the issue, please follow Step 4 , so that we can have this information to further assist.

Description of the issue: I have been invited to a game. When the invitation came to my inbox, in the drop down menu that appears when you click the small envelope symbol, the accept button does not respond. The graphics for clicking it (the "accept" word dissapearing and reapering) function, but nothing happens. It seems none of the normal buttons that appear on the window are functioning. Adendum: After doing steps 1-3, nothing happens. However, abbout fifteen minutes later, the button started working again. System Settings: W indows 7, Firefox vers. 39.0, Java Script disabled, Cookies enabled, Avira Internet Antivirus (disabled in Step 2) Thank you.

@Edward M. I believe this issue should now be resolved. We pushed out a fix for the menu bar just a bit ago that should have resolved your issue. 

It has been resolved. Thanks, Ryan and GenKitty! :D