Can't adjust Adobe Flash for sound/microphone
After clearing my browser's cache, I'm unable to get the Adobe Flash to work properly with Duolingo. When I'm prompted by a Duolingo question that requires the use of Flash, (where normally the microphone icon would be) I get an error message/screen asking me if I want to Flash to allow Duolingo access. There are several boxes in the error message, that on a normal Flash Settings Manager, I could check. However in this version of Duolingo I can't actually check the boxes that would allow Duolingo access. The error message is supposed to be interactive but it's not, it's just an image of the actual interactive screen. I've restarted my computer, reinstalled Flash, searched under Adobe's Help section. I'm using Firefox and the plug-ins are allowed/active. Help!