WIFI DHCP ISSUE

We have a site with 70 APs, with 3 SSIDs and an external DHCP server.

Fixed connecitons on get a DHCP response no issue on the relevant VLAN but WIFI users connecting on SSID (each SSID has their own VLAN) get NO IP address. Can anyone help please

Sorry this is deployed in a OMNI SIRRUS cloud enviroment