I've devoted server it convey more than 5 domain names are parked, there' have installed Joomla and Moodle and that i have synchronized with every using xml-rpc and joomdle, after i try that one i acquired the mistake below within the Joomdle Web Services tab of joomla admin

"Joomla URL appears to become misconfigured in Joomdle auth wordpress plugin in Moodle",

I've looked large amount of forum but all of them are stated the URL isn't set up properly however i have given correct path and someone stated its because of the DNS problem please anybody assist me to to short out this problem.