@ixx Good to know the beta firmware helped, please monitoring the router for longer and get back to the community, thanks a lot.

@Mendo Hello, thanks for getting back with all the details. I found that you are following the issue with the engineers, they will help with the debug or further issues, thanks.

@carbonfibre Hello, thanks for asking. Yes, you can install this beta firmware on your Archer C9(US) v5.0 and this will work.

@jancef Hi, it might be, we suggest you upgrade the router via a wired connection, just in case the wireless is not stable when upgrading the firmware.

@svr7 Hello, sorry that we didn't pick up your post timely. Port 53 is used for DNS. As per the info you provided, it shows you are trying to resolve this domain arstechnica.com and the traffic is...

@Nn7 Hello, do you actually encounter any issue with the remote access or ping with the Archer C1200? Please provide the basic info and show us how did you test it.