Just started using this add-on and I friggin love it. This is something you would expect from a paid add-on. Very well done and adds an even deeper dimension to how you can engage, reward and build stickiness with your site's users. Ozzy continues to be a force for the XF community and I am thankful for it.
What exactly does "Doesn't work with subfonter" mean - do you get any error message?
What were the exact steps you did take to install and configure the Add-on?