Hi All, I am trying to set up a Smart DNS on a new TP Link Router (TL-WR940N) that I purchased today. The router will be a secondary router to my Sky Q router. I have an Ethernet cable from Ethernet point 1 on my main router (sky), going into the WAN point on my TP router. I am following instructions 4.7.1 (https://static.tp-link.com/2017/201712/20171215/1910012310_TL-WR940N_V6_UG.pdf) and I am stuck at the first point. I am logged into my router and trying to change the DHCP settings. The server is set to enabled by default, which is what I want, but I am unable to input any primary DNS settings or start IP address. They are sort of greyed out and won’t let me edit anything in that section which would enable me to set up a smart DNS. Basically what I am trying to do is set up a Roku streaming stick to enable me to watch and download U.S TV apps. I have read that you can not set up a VPN/Smart DNS server on the Roku stick and the only way to do it is to set a VPN directly to the router. My Sky router doesn't allow what I'm trying to achieve in setting a VPN up on the router so I have purchased a secondary router which allows that, but now I'm having issues changing the DHCP settings on my TP router.