Form bug while submiting

hey, a week ago it used to work, I do not know what happened…
this is the form page - http://orshpitz.webflow.io/product/vgh-4
preview link - https://preview.webflow.com/preview/orshpitz?utm_source=orshpitz&preview=d816875cabc7cc622af1d05c6f8fb538
this is the errors:

the form is inside a slider and includes some custom code and supposed to show an Iframe when the form is succeed.

how do i fix it? thank you very much!

video of the bug

The error you get is a CORS error. That happend whenyou mix https and HTTP…

Both links/sites must run HTTP or https. If you read the error your site is using HTTP

Multi-Step Form clone example:

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Never looked at the code, only the error code :grinning::grinning:

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I am wrong - now i see the form tag.