It's hard to say what's happening on your site. I was intrigued by your post and visited your example page. I saw the behavior you're talking about, but I'm not sure what the solution would. Your form uses Ajax calls as it processes answers and moves to the next question. Ajax can easily be broken by jQuery/JavaScript errors in other scripts. There are no errors showing up in the console. I also checked the values in a few Ajax Request/Response headers and all seems for Formidable Ajax calls. There's no problem with the Ajax. My next thought is theme interference or transition timing, both of which require troubleshooting at the site level. I'm not familiar with the theme or builder you're using. I saw a lot of classes starting with fl-. It just seemed that there's a lot more HTML being generated by your system than I usually see on Formidable Form pages.You can narrow down the problem by changing to a default WordPress theme. Does the problem still exist? If no, it's something with your theme. If yes, it's possibly a plugin conflict. You may also have to enable WordPress debug to see any errors or warnings in the error log.