Conflict with Q&A Plugin causing errors

The Q&A plugin has been providing continuous error :

http://prntscr.com/auo3bs
http://prntscr.com/auo2n7

Not only that, the plugin removed all settings : http://prntscr.com/aunqga so it is also not displayed on the wordpress blog , as it should be : http://prntscr.com/aunp5a Before renovation , it was more functions than it is now .