No LAN Access on Wireguard Server

I setup a Wireguard vpn on my GL-AR300M16 to my home router (unifi UDM SE).
The connection can be established and I have access to the internet though this vpn.

But I’m not able to access my home infrastructure.

If I set up a wireguard connection directly on my phone, I get access to my whole infrastructure. So it is maybe not an issue with the config on my home router.

What must I setup to get access to my home LAN (From my PC behind the GL-AR300M16 with a working wireguard vpn).