Internet for Forti AP not working but can ping google.com and internet.

Hi to all,i created new SSID with ip subnet on fortinet and allow traffic to pass to all Forti AP. I created also policy from source SSID to outgoing interface (Internet). I can ping 8.8.8.8, however i cannot search through internet. I tried it on my mobile and all apps like fb messegner are working. Please take note that all services are allowed on my policy rule. But when i use browser to search on internet, it doesn't work. Also, the old SSID for internet is working, i just copied all the config and policy to new SSID but not working. The fortinet is configured to be a dhcp for SSID and also to be a wlc for forti AP.