We have your plugin installed on our website;
http://www.p2poolmining.us/community/
We love the plugin and it has been working as we would expect it to. However, we just identified an issue that we are having with the Q&A Layout where when a user clicks on the "Add a Comment" icon nothing happens. We do see a spinning "Working" wheel in the upper right hand corner of the page but nothing else changes.
Based on the outlined functionality and how clicking this link here on the wpForo forum works. It is clear that our community forum is not working as it should.
Can you assist us in determining what the problem is?
wpForo JS is crashed. It conflicts with either theme or other plugins.
Start checking with plugins. Deactivate all plugins, delete all cache and test wpForo Q&A buttons again. if it starts working, activate plugins one by one and check after each activation to find the problem causer.
If plugin deactivation doesn't help you should change the theme.