@jra11500 Well, that's worth a try to avoid the double NAT - thanks for the effort testing this topology.

@Tmaz Don't use the app for troubleshooting - there's a limited device information through its interface. When you get back home execute these steps from your desktop PC using the BE800 WebGUI.

@Tmaz Can you post your BE800 ethernet ports status: If everything is normal, sometimes resetting the router to its factory defaults helps - press the reset button for about 10 seconds. Configure...

@theHypoSloth To isolate the issue with VR300 you could put it in a bridge mode and use the AX55 for building the PPPoE session - details. Thus you'll avoid double NAT in your local network and use...

@CongoKing Set a static IP address on its LAN interface and set its DHCP server to OFF to mitigate this - it's normal behavior in AP mode.

@Kinkeen That's normal - it's beta FW version aiming to fix the MU-MIMO issue. When the next stable FW comes these watermarks would be gone.