Hi @Daniele_Sunrise, thanks for the tip.
I’ll give the factory reset a shot when I have some time, though I suspect the issue might be deeper than a simple settings glitch. The router actually follows my configuration perfectly. The issue seems strictly limited to the UI’s trouble with the endpoints that return the list of connected devices.
One detail that might be helpful for your technical team: I have over 10 reserved IP addresses. I wonder if that volume of entries is a contributing factor in the firmware returning a malformed response to the browser.
I’m not sure exactly when I’ll have the time to perform the reset, but I’ll report back once I do. In the meantime, if you find out anything new or have another theory you’d like me to test, I’m all ears!