Hi, 
Looks like this feature is missing, I don't see any clients listed, and have been pulling my hair for the past few days. 
I have 2x ISPs connected to WAN (Port 1) and WAN/LAN1 (Port 2) and the then it goes to ASUS Mesh thorugh port 4 which is LAN1. ( I know it's confusing but you've named it that way..)
My 'network' topoligy goes like this:
[ ISP router 192.168.1.1 ] → [ Festa FR205 192.168.0.1 ] → [ Asus Mesh (AP) 192.168.0.2 ] → [ Clients 192.168.0.xxx ]
DHCP Server only enabled on Festa FR205, but I can't find or manage to bind devices IPs to their MACs.

Am I missing something or a 2025 router can't ROUTE?
Thank's.