Guest wifi network doesn’t work on EAX20

Hello

I have Netgear EAX18 as network extender. It is connected to my main router using wifi network.

I configured it to extend my home network but I need to create also a guest network to share only the internet connection with others devices or withr the guests.

The problem is that I am not able to access on both networks at the same time.

I mean, the Guest Network is visible on my wireless devices, but I can’t access on it.

The Guest network is accessible only if I disable the main network on the extender. Of course, in this case I can’t use the main network that is what I need.

See below snapshots:

Is this a limitation of this extender? Or is there some problem on my configuration or device?

Thanks in advance for any advice.