@mcyzyk I think I just answered my own question, so am posting here in case anyone else has a similar problem: I disabled "AP Isolation". I am now seeing the Chromcast and DLNA renderer on my Android...

I am using my Archer C80 only in Access Point Mode (not serving as DHCP server, etc.) I just bought an Android TV stick, which is connected to the network wirelessly. While I CAN see other WIRED...

New Archer C8 here, in Access Point mode. It's serving up my WLAN. And I want to filter by MAC. But no Advanced tab. It would be good if you could filter by MAC (Whitelist) while in Access Point...