Agent monitored host get's [no data] but ZBX button is green

[mircsicz]

I've a firewall I'm monitoring with a up to date agent which I can't get the data into the DB:

838:20201012:064521.641 In zbx_tls_connect(): psk_identity:"router.hg.eus.lan"
827:20201012:064521.779 zbx_psk_client_cb() requested PSK identity "router.hg.eus.lan"
824:20201012:064521.782 get value from agent result: '3822661632'
824:20201012:064521.782 End of get_value_agent():SUCCEED
824:20201012:064521.782 End of get_value():SUCCEED
824:20201012:064521.782 In zbx_activate_item_host() hostid:10216 itemid:31461 type:0
824:20201012:064521.782 End of zbx_activate_item_host()
824:20201012:064521.782 In zbx_preprocess_item_value()
824:20201012:064521.782 End of zbx_preprocess_item_value()
824:20201012:064521.782 In zbx_ipc_socket_write()
857:20201012:064521.782 End of zbx_ipc_service_recv():1

The ZBX Button is green


But if I create a graph/map/screen all I get is:


I'm grateful for any hint you can give me