Why doesn't function reCaptcha?

Here the site I have the problem:

https://maksy-clean.de/index.php?option=com_chronoforms5&chronoform=Bewerbung_MRC-TEAM

(reCaptcha on the TAB "Bewerbung absenden")
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All Google-Keys are entered in Joomla and ChronoForms... But can'T imagine where to look at if something is wrong or functions not correctly.
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Hope someone can help me?
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Best regards
Michael

Hi MIchael,
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There is an error showing on the form page:
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index.php?option=com_chronoforms5&chronoform=Bewerbung_MRC-TEAM:1
Mixed Content: The page at 'https://maksy-clean.de/index.php?option=com_chronoforms5&chronoform=Bewerbung_MRC-TEAM' was loaded over HTTPS, but requested an insecure script 'http://www.google.com/recaptcha/api/challenge?k=6LeSXKsUAAAAAGrGKBehn2QMUBb_aVMNV45qFWm0'. This request has been blocked; the content must be served over HTTPS.
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Please set the Load ReCaptcha action to use the Secure setting - you may also need to update to the latest release of CFv5.
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Bob

I think I know what may be happening:
I had a problem similar to reCaptcha v.2

In the "view" tab I had configured the reCaptcha Loader and correctly placed the "site key" and "secret key" correctly.
In the "action" tab, in the "submit" event I had placed the "Check Google reCaptcha" with the same "secret key". When I ran the form, it gave error.

I found that in the initial tab of the form there is an option "Check Security Fields" that does this automatically and comes by default enabled. I disabled this option and everything worked perfectly. The only thing is that I am using Chronoforms 6.1.

Try there in your version.