Composit resource problem

Hello, 
 
I always get "No composite resource found" while adding any new resource mailbox. I have composite resource for user mailbox, will this not work for it?

The issue can occur if you have not sold Composite Resource to the customer either as part of the Service Plan itself or as a separate Add-on to the Service Plan. If such is not the case then you can discuss it with our team by sending an email to support@hostingcontroller.com