Rename connected clients

Hello how can I change the name of the clients connected to my SFT1200 Opal

You can change the device name on both the phone and the computer. For mobile phones, turn off randomising the MAC address to ensure the device reads the correct device name.
4.x firmware supports changing the MAC equivalent on the router, but it is not yet available in a stable version for SFT1200.

Do you have a manual or tutorial of the process?

Which process are you referring to? Change of device name or router firmware upgrade?
Here are some references:
Rename your Windows 10 PC - Microsoft Support.
Change the name of your iPhone - Apple Support.
How to Change the Name of Your Android Device (

Debrick via Uboot - GL.iNet Docs (

Change device name in rooter

If you want to modify it on the App, please manually upgrade to the 4.x firmware first.

I have upgraded to 4.1.1 beta 1 and now Wireguard does not work, any suggestions to fix the error?

Can you provide a log?
I am not sure if there is a solution and may have to wait for a new firmware release to fix it.

I solved it, it was a driver problem, I updated to 4.2 and it was solved.