Not updating dynamic DNS

I am having a very similar issue. My old setup was using a NightHawk router. This sits behind a ATT Fiber Modem set to be in pass through mode. Everything works great on the old router. Port Forwarding works great, DDNS with No-IP works great. Set up the new RS300 router. Set all the settings to be the same and nothing works. Cannot get no-ip to update correctly, show status says incorrect host name, it is not. I am not entirely sure my port forwarding is working either. I updated my firmware when I setup the RS300 so I am not sure if this is a known issue that is being work on. I have tried shutting down the RS300 multiple times to see if that would kick something into working but no luck.