seems you have some security or caching plugin that makes some trouble
Access to fetch at ‘xxxxxx/bloqueos/login-com.php?id=JvrYYFDCM10u0KwhsgbqaocN&rule_id=824’ (redirected from ‘xxxxxx/wp-json/contact-form-7/v1/contact-forms/16426/feedback’) from origin ‘xxxxxx’ has been blocked by CORS policy: No ‘Access-Control-Allow-Origin’ header is present on the requested resource. If an opaque response serves your needs, set the request’s mode to ‘no-cors’ to fetch the resource with CORS disabled.
check the console after submission
check the console after submit the form to get this error.
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I have already told my hosting provider to deactivate it for me
there is something strange in your wp-api seems like you have yet some “protections” that disable the wp-api
https://marcosocio.com/wp-admin/admin-ajax.php
the server just activated it
still it doesn’t work