SonarQube JaCoCo plugin

Hi. We are currently using SonarQube 7.1. We are having issues with code coverage showing at 0% for multi-module projects because the scan is unable to pick up the JaCoCo reports. We believe that the reason is because we do not have the JaCoCo plugin for SonarQube. However, I tried to go to the website and it is saying that the plugin is not available for download. Here are the plugins we already have installed:
sonar-csharp-plugin-7.3.0.5690.jar
sonar-groovy-plugin-1.5.jar
sonar-java-plugin-5.6.0.15032.jar
sonar-javascript-plugin-4.2.0.6476.jar
sonar-json-plugin-2.3.jar
sonar-ldap-plugin-2.2.0.608.jar
sonar-python-plugin-1.9.0.2010.jar
sonar-scm-git-plugin-1.4.1.1128.jar
sonar-scm-svn-plugin-1.8.0.1168.jar
sonar-web-plugin-2.6.0.1053.jar
sonar-xml-plugin-1.5.1.1452.jar

Where can I go to get the JaCoCo plugin? If you feel the plugin is not the solution to my problem, then what should I do? Thanks

The minimum supported version of SonarQube is v7.9, which comes bundled with the JaCoCo plugin. First thing you should do is upgrade!