Form Not Submitting – even after rewrite rules

Submissions spinner keeps going with no end.

Error:
{“code”:”rest_no_route”,”message”:”No route was found matching the URL and request method”,”data”:{“status”:404}}

My wp-site is the most up-to-date version.
Theme is Highend Theme.
Using Wp-Rocket for Cache

None of the other support threads suggesting the .htaccess rewrites i get another error

rewrite:
RewriteCond %{REQUEST_URI} !(.*)/$
RewriteCond %{REQUEST_URI} !^/wp-json

https://zamartz.com/wp-json/contact-form-7/v1/contact-forms/6506/refill
404 page not found

The page I need help with: [log in to see the link]