Redirect to an external link doesn't appear to be working

Both my forms should be redirecting to https://www.hutchinsonai.com/thanks  when someone completes the form, but it's not. Instead I just get a blank page in what appears to be an iframe. How can I get the user to see the thank you page outside of the iframe? We are using this page for Adword conversion data. Screenshot attached it what I see after submitting the form.

I made a test submission on your form and I was able to reproduce the problem. The browser blocks the redirection due to same-origin-policy. This simply means that you can't redirect to another URL that doesn't have the same domain name, protocol, port of the original URL, otherwise it goes against the same-origin-policy and the browser would block it.

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To fix this, use the correct domain name. It should be https://hutchinsonai.com/tube-mounts-500-series/ in order for the redirection to work. Here's my second test.