Lol.. okay, a couple things.
(1)
You are using this forum to ask questions based on WP Edit Pro. It took me a while to realize you already had WP Edit Pro.
You need to post your WP Edit Pro questions on our Dedicated Support Forum. I can get in trouble for supporting a premium plugin here. Please respect my position and post accordingly.
(2)
Regarding the iframe.. this is because the “Auto Completion” is checked. Please uncheck the “Auto Completion” (in the code magic window), and it will stop the auto-complete box from displaying.