You do not have permission to access Zoho Invoice.

You do not have permission to access Zoho Invoice.

I am the Google Apps Administrator. Zoho Invoice shows as installed and enabled. I can also select it from the menu on my non-admin id. But all I get is this message "You do not have permission to access Zoho Invoice. Please contact your Administrator."  Please reply with solution. I see others have had same problem for Zoho CRM.