Urgent problem with VPN WireGuard

Hello, I have an urgent problem. I configured the VPN with Wireguard Server on a GL-iNet MT300n v2. The connection is successful; I can even remotely access the portal at the address, so the traffic with DMZ from the router to GL-iNet is successful. The problem is that I cannot reach the PCs on the network ( even though I can reach the provider's modem. My configuration is:

Address =
ListenPort = 9872
PrivateKey = xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx=

AllowedIPs =,::/0
Endpoint =
PersistentKeepalive = 25
PublicKey = xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx

I have already enabled the "Allow access to the local network" flag on the portal.

Please read How to troubleshoot WireGuard to check for the most common mistakes.

Here's the translation:

My problem is not there. I have correctly set up the routing from the modem to the GL-iNet, and it works. Once I reach the GL-iNet with the VPN, I cannot communicate with the devices on the network except for the gateway/modem

I found a similar case, but I did not understand what needs to be done.