This typically happens upon license key and FQDN conflicts where your current license was previously used on an other PBX Installation with a different FQDN. Could you please provide me with your PBX or WebMeeting FQDN?
You can restart services by logging in the management console and accessing the services tab on the dashboard.
From there you can restart all services.
Also make sure that you are using a supported browser to access the management console like google chrome