Services CHECK_MK Discovery missing

I cannot see the specific service called “CHECK_MK Discovery”, which will check every 2h for new or changed services, under the services of the hosts. The only service there for new hosts is PING. When I go into WATO, Services of the host, all the services were found and I can activate them. But the service for Discovery is still missing.
It is not only for SNMP devices, also for devices with Check_MK agent configured.

In our produktive system I see this service and it works - see here in the screenshot:

This Check_MK Discovery service right after the Check_MK service is missing in my new installation.

Thanks!