Hi Petra , I see the issue. Your WordPress environment has been configured for
www.palturai.com, but you have logged in via
palturai.com without the
Due to browsers policy it cannot load content from different subdomains without the permission 'Access-Control-Allow-Origin' header set.
I personally would recommend you to force the
www variant on your website and make sure you are logged in via the
www subdomain when you edit Buttonizer. That should be the solution 🙂