The update server is behind Cloudflare. If you use any kind of VPN or your IP is being blacklisted then you won't be able to connect to the update server.
Problem began when I tried Untangle UTM as the router. Not sure why the system was blocking access...it never even showed the attempt to reach the update server but along with other weirdness I have since made the 68U the router again...now the update server is visible once again.
Welcome To SNBForums
SNBForums is a community for anyone who wants to learn about or discuss the latest in wireless routers, network storage and the ins and outs of building and maintaining a small network.
If you'd like to post a question, simply register and have at it!
While you're at it, please check out SmallNetBuilder for product reviews and our famous Router Charts, Ranker and plenty more!