For the first configuration, the XR 500 was in AP Mode connected to another router (which provided DHCP, internet connection and all rules). After i was able to remove the old router to use exclusively XR500, so no conflicts and no subnets ^^ but Hue bridge don't work in local (only via Internet).
I can access throught port 80 but can't link to my smartphone => i didn't find the port used by the connexion on documentations, with wireshark i will be able to find it i suppose...
UPnP is activated with default settings. I'm still looking documentations to find a solution, as I'm not alone here ^^