FortiAP

FortiAP does not give DHCP address in bridge mode
I have working MC-LAGS for the fortiAPs. They are therefore connected to the two Cisco switches
I am able to create an SSID in tunnel mode without any problem.
I wanted to use SSID switch mode to use the same VLAN for WIFI and wired clients, making it easier to access common printers.
When I assign the VLAN to a switch port, it works fine.
When I create a new SSID in bridge mode and assign it the same VLAN, I can connect to the SSID, but there is no DHCP for WIFI clients.
Do you have any idea what could be the problem?
Help me please