Solved
Intermittent issue FORTIAP not broadcasting SSID
Current fortinet 61F firmeware version 7.0.11 for wireless using FAP U323EV to 7.0.132 version, I have configured 2x ssid guest for tunnel and another one for brdige mode most of them works during the night time and next day morning it stopped broadcast the SSID.
also found out some forward traffic logs where it showing FORTI-AP interface is not able to talk to DNS whil
