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.
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