I installed the LUCI Webgui additional to the regular gl-inet webinterface to check on the firewall.
Reason is, I can ping from the LTE router → WG-Network AND the LAN of the WG-Server
but not the other way around which would be the goal.
The wg0 interface is not shown at the LUCI-Network-Interfaces, but appears at the Firewall settings page.
Here the fw config:
This is how the LUCI config looks like:
thanks for your help