Google ReCaptcha not working as expectted

i have additionaly installed chronoforms v7 on a joomla 3.9.26 with installed and working chronoforms v5.
because of php 7.4 issues with cf v5 and a missing v5 to v6 to v7 converter i have to create all forms in v7.
so far so good but after i have created the first form i get the following 3 errors:

1. using google recaptcha v3 will show the info image on the right bottom corner but after submiting the form the "reCaptcha Error message" is shown but the email with the form data is send to defined mail address?
2. using google recaptcha v2 throw the following errors on web developer console.

if i call the url in an external browser window without ?render... i get no error?

GET https://www.google.com/recaptcha/api.js?render= [HTTP/2 400 Bad Request 181ms]
The resource of "https://www.google.com/recaptcha/api.js?render=GOOGLERECAPTCHAPUBLICKEY" was blocked due to a MIME type conflict ("text / html") (X-Content-Type-Options: nosniff).GOOGLERECAPTCHAPUBLICKEY.

1. i have also a calender form field but if i show the form the following error is shown:

Uncaught ReferenceError: moment is not defined (https://DOMAINNAME/libraries/cegcore2/assets/js/g2.boot.js:107:11)

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i hope you could help me because recaptcha and calendar are essential and necessary elements of the form.