@David-TP if you click on 'IPv6 Connection' then you can manually set the DNS servers.

@philivey81 have a look at the IPv6 settings.

@philivey81 the first two are IPv6 DNS servers and the second two are IPv4 DNS servers. You have set two IPv4 DNS servers, but you also need to set two IPv6 DNS servers.

@Poppy_Lucy I have had that happen a few times. The best option is to ignore the LEDs and the app unless you actually have a problem. I assume you are using the XE75Pro in router mode, which seems to...

My Deco XE75 Pros are set to automatically reboot once a week, but I have noticed that after an automatic reboot devices lose IPv6 connectivity, and another reboot is required to restore IPv6...

@RedeviL Android does not support DHCPv6. Use SLAAC + RDNSS.