Hi Ahmad,
We replied to the ticket you open with us regarding the same issue you describe here. But we haven’t heard from you. So I’m pasting here our answer:
I don’t see any author box on your frontpage, so I guess you mean the “frontend”. If I check any of your posts, I see that the author box displayed at the bottom is not rendered by our plugin, but your theme. Please use the author box provided by our plugin to display the correct author information. You can enable our author boxes at: Authors > Settings > Author Box. There, you will see the option (the first one) to enable our author boxes. Once it is enabled, find the Display panel and make sure to pick “Posts” for the “Automatically show the author box on all:” setting. And Save Settings.
Are our author boxes being displayed now in your posts?
Please let us know so we can provide further assistance.