@Clive_A the router is not disconnected, but it's not a big deal for me, I don't use IPTV, it also applies to ER8411 and ER706W which are on the same controller, I have another controller with...

@Clive_A here is a screenshot, I'm running windows controller version 5.14.30.7 Early access, maybe that's the problem.

@NutsB22 it looks like there is something buggy on the 2.5gb port yes, it is the same on ER8411, ER706W and ER707-M2, it seems that default wan cannot be used for IPTV, other non-default WAN ports...

@RLGRIME Yepp goto services and DNS Proxy

@A_Mansoor Edit Client Rate Limit Profile on SSID configuration

@Rickar Yepp