Fortigate does not show logs from FortiAnalyzer/Fortimanager

Hi!

I am just trying to setup a ha-pair of FGT200e to use my FortimanagerVM as logging device (FortiAnalyzer).

The logs are sent to the Analyzer and can be reviewed there:

 execute log fortianalyzer test-connectivity
FortiAnalyzer Host Name: FMG-VM64-XEN
FortiGate Device ID: FG200E*******
Registration: registered
Connection: allow
Disk Space (Used/Allocated): 4/Unlimited MB
Total Free Space: 76703 MB
Log: Tx & Rx (530 logs received since 13:25:03 04/19/17)
IPS Packet Log: Tx & Rx
Content Archive: Tx & Rx
Quarantine: Tx & Rx

The problem is, that I cannot see the logs on the Fortigate appliance:

##execute log filter device
Available devices:
 0: memory
 1: faz
 2: fds

##execute log filter device 1
##execute log display
0 logs found.
0 logs returned.
0.0% of logs has been searched.

Do you have any idea, why the fortigate-systems do not poll the logs from the FortiManager/FortiAnalyzer?

Thank you and best wishes,

KPS