Accesspoint network is not routed

Question

Hi community 
 I am struglling with my internal Access point connection. 
 
 Setup: 
 I have configured a new interface on the XG with a new IP range, the XG is setup with DHCP server that offers IP Adresses from that new range to the Access point which works perfectly. 
 1. The new interface is set into the zone LAN. 
 2. XG is setup to make DNS. 
 3. XG is setup to make DHCP (as described) 
 4. There is a static route for the WLAN network to be reached over GW Access point on the new interface 
 5. The Access point is configured as a gateway 
 6. Firewall rules are in place to reach the WLAN from internal LAN and vice versa. 
 
 Issues: 
 Ping is OK from internal to the Access point over the whole connection. 
 From the WLAN it is possible to ping the whole connection to the internal LAN interface of the XG too. 
 But I can not ping from internal to that client in the WLAN and from the client in the WLAN I can not reach any ressource in my LAN and not the external IP adress of the XG or any other eyternal IP adress (therefore it's pretty clear that DNS is not working either). 
 
 What is missing to make my WLAN able to reach the network?

nicolebaumeler · Accepted Answer

Hi everybody who has answered to my request and 
 
 I fixed the problem! 
 
 1. There was an McAfee package running with firewall on the client that came within the installtion and I did not know about.... 
 2. After I uninstalled that one it was the clients default firewall (Windows 10) that blocked incoming icmp requests -> disabled that one too -> icmp is now replying \o/ 
 3. Last but not least I deleted all static and policy based routing (except the default route) -> internet access is now working too \o/ 
 
 thank you all for having taken yourself the time to read and answer on my question!