https://experienceleague.adobe.com/docs/experience-manager-65/forms/administrator-help/configure-acrobat-reader-dc-extensions/updating-expired-reader-extension-certificates.html?lang=en

make sure all your bundles are in active state

http://localhost:4502/system/console/configMgr make sure you are in this URL 

your version of AEM and are you logged in as admin?

 

Mac OS is only for development purposes officially it’s not a supported platform for production

can you try on either Windows/Linus operating systems? Also, can you use the latest version 6.5.15

when your form is submitting to a servlet, write the following code in your servlet Enumeration<String> params = request.getParameterNames(); while(params.hasMoreElements()) { String paramName = params.nextElement(); System.out.println("The param Name is "+paramName); String data = request.getParame...

when you submit your form to your REST endpoint the entire form data is available in the servlet. You can convert the input stream to w3c.org.Document and then parse the xml as per your needs

your servlet is expecting a GET call. You will need to change it to make it to POST servlet. For that you need to extend SlingAllMethodsServlet