Support for JBoss AS or Wildfly community versions

Issue

• Does Red Hat officially support JBoss Application Server (AS) 6.X?
• What's the difference between JBoss AS and JBoss EAP?
• Wildfly not working.
• Need support for the community version.
• Issues with Wildfly community versions.
• How the implementation of the JBoss cluster is different in Wildfly 12 as compared to the current JBoss AS 7.2?
• Wildfly startup failure
• JBoss EAP can be freely acquired from the JBoss community. Is there any difference between the paid product and this product?
• Will JBoss EAP taken from the JBoss community be supported?
• Our account is the only one that we have, our JBoss is not JBoss EAP, so can Red Hat help us with this case with the current account?
  Can we use the JBoss community version of JBoss for UAT, DR and Production servers? If yes then from where we can download this community version.