I have two questions;

I read the forum that there can only be one SSID for the home network. This is a big inconvience, some smart devices does not like 5g network, even though it is advertise as both it is not working great. I tried to use the guest network which can set to 2.4g however the dhcp is not customizable. This is big pain as the DNS setting is inherited the setting from the main dhcp pool.

The design is so bad, the ip address from the guest network can't connect to the ip address that is on the lan, so any local lan DNS can't be accessed....

Flaw in design please help to fix.