Just to follow this up, if you want to try it again, then you need the trunk between the switch and the access point, as ClaytonMeyer wrote, and then for each SSID you need to configure it to tag the traffic. In the Meraki Dashboard go to Wireless -> Access Control, and under the Addressing and traffic section you need to be in 'Bridge mode', and then set VLAN tagging to 'Use VLAN tagging', and then for the VLAN ID, set All other APs to the VLAN ID for the SSID - so for SSID.1 set the VLAN ID to 100, then change to SSID.2 make the configuration changes again and set the VLAN ID to 200, and so on. If the wired part of the network is correctly configured then this should then tag the traffic from each SSID with the appropriate VLAN tag. Just remember that if the DHCP server isn't on the same VLAN/subnet as the client then you'll also need to configure DHCP forwarding for that VLAN/subnet.
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