@Blaster That's too bad. I'm afraid there was something wrong with the upgrade process, please check if this is still in warranty as per the local warranty policy. If it is within the warranty,...

@dpolshaw Thanks for the valued update, glad to hear that it was resolved. Have a nice day.

@lusciousblue Thanks for your valued reply, glad to hear that it was resolved.

@lusciousblue If you cannot change the VDSL modem router into bridge mode, please choose the IPv6 Internet Connection Type as Pass-Through (Bridge) on the C7, then check again:

@grandepinna Hello, thank you for patiently waiting. Our developer provided a beta version for the printer controller utility, which can support the printer sharing on the Mac Big Sur Version 11.0...

@chow91 Nope, the Archer AX73 USB doesn't support printer function.