UPnP/DLNA Server on RP-AC68U not work

Hi to all, this is my first post
I have a Asus RP-AC68U Repeater with latest firmware 3.0.0.4.382.10513
configured as AP and a 16 GB usbkey sandisk,

my problem is dlna/upnp not detected by my device (samsung tv and 3 pc windows)

i tried all:

Meanwhile I reset to factory settings after updating the last firmware, and I turned off dhcp server by telnet (i have another router connected with dhcp server)

All work perfectly, wifi, download master, samba, aicloud,
but no dlna server is...

UPnP/DLNA Server on RP-AC68U not work