If a visitor access the demo iframe of ThemeForest at: https://preview.themeforest.net/item/magone-responsive-magazine-news-wordpress-theme/full_screen_preview/14342350
he will see a message: demo refuses to connect
But when if he access the demo page directly at: https://demo.sneeit.com/magone/ (or he can click Remove Iframe) and he will access the demo properly.
Any body has problem? Appreciate if you can help. Thanks a lot.