Since I cannot see your system setup, what would help is to see screen shots of all the dialogs and the alert you see. If you can record a video that would really help. It just sounds to be like you have a setting not properly configured. When you get a chance, please do update that info with your support ticket so we can see what is causing the problem.
Update: Yes, what Jo An said.
Learn the essentials with these quick tips for Responsive Site Designer, Responsive Email Designer, Foundation Framer, and the new Bootstrap Builder. You'll be making awesome, code-free responsive websites and newsletters like a boss.