Thank you for your question today. I took a look at your webcalendar configuration. It appears it is still using an old URL, possibly for a domain you no longer use. By editing that specific installation within the softaculous you should be able to change the URL to point to your current one. This should enable the program to work normally.
To edit the installation configuration, follow these steps:
|Email:||support@WebHostingHub.com||Ticket:||Submit a Support Ticket|
|Chat:||Click To Chat Now|