quastion my hue dont work when using guest account

[titatovernaar]

hello i have some quastion

I installed last firmware from merlin on my rt-ac87u router
when i make a guest account on 5ghz then my hue bridge what is connected with a utp cable to the router
is not working anymore.
The website from philips also dont can find my bridge anymore.
When using the normall 5ghz it works good seems only probleme with activate the guest account.
also the 2,4 ghz guest account works fine.

Thanks eric