Hi,
I recently updated my Frontier router and now dnsdns updates are no longer working. It was working on the older Frontier router. I tried using NO-IP and I can confirm that NO-IP is working, so at least DDNS itself is working on the Arris router. My suspicion is that the Arris router is using some older update method for dyndns.
On the router, I don't see any advanced options

Any suggestions?
Thanks,
Bruce