How to rename the LAN network name on Beryl AX (GL-MT3000)

I recently got the Beryl AX which I have set up and is currently working with a VPN. Recently I opted to connect to my PC via ethernet for more privacy, I intend to turn Wi-Fi off for my PC and only connect from the router to my PC via ethernet.

I have one small issue, when connected my network name for the LAN shows a name (SSID) that I previously gave the 5ghz Wi-Fi, which I have since changed.

I have done a firmware reset to the original wifi SSIDs and once again changed the Wi-Fi (both the 2.4ghz and 5ghz) to my preferred names, but the ethernet connection persists the previous name, which I no longer want, and I can't find any option to rename the LAN.

I tried with 2 different PCs and it's the same network name, some I'm guessing it's not something with the PC but the router.

How can I change the name of the LAN network for the router?

Could you please provide a screenshot where you see it on your PC?

I have same exact issue -- how do I rename the LAN network name. When I connect to my router via ethernet cable, it shows a name of GL-MT3000-xyz-5G, (where xyz is last 3 characters of the router MAC). Where is that name coming from and how do I modify it?

Check out this guide