orbi RBR10 access control 501 error

[MikeD-4]

Router Firmware Version
V2.5.1.30

unable to vew devices, looking for fix.  When I try to enable access control, I receive 501 error.

[vajim]

using the app?

if so try logging into your router via web browser

[MikeD-4]

I have used both, app and web browser. Also used chrome and safari.

[vajim]

so what changed since the last time you did NOT get the 501 error?

[MikeD-4]

Have not patched into network in a few months. I believe the firmware updated since I have it set to auto.