Intermittent DNS Resolution - MG8702

I'm using a personal Motorola MG8702 for my router and have been using it with no issues since December 2020. Suddenly the second week of January 2025, all my DHCP client devices stopped being able to access the internet. I've tracked it down to the fact that the MG8702 has stopped relaying DNS requests. It still routes packets OK. Pinging IP addresses worked fine, just names did not resolve.

To be clear, the MG8702 is acting as a DHCP server. I've tried it both ways, set to get the DNS servers from the WAN (Obtain from MSO) where it gets 75.75.75.75 and 75.75.76.76, which are the Xfinity DNS servers, and also static which is 1.1.1.2 and 1.0.0.2 which are Cloudflare DNS servers. I verified with that ALL of those DNS servers do respond correctly. However, the MG8702 stops passing those DNS server IP addresses to its DHCP clients. THE TEMPORARY FIX is to JUST get into the router and hit SAVE on the DNS Connection settings...even though I don't change a thing.  This works for a few hours until the "outage" happens again. So I'm now in a constant state of fear due to working from home and having to watch the DNS service until it fails to pass names to clients, log into the router, save, and then wait until if fails again.  Any solutions?  I'm coping two others that have had the same issue years ago. @user_a61075 @user_a17d3f Hoping one of them found a resolution.

Thanks so much for the help.