LACP-Portchannel with multiple VLAN between Fortigate and GS1920-24HPv2

Hi everyone,

i hope someone can light me up. Clients connected to VLAN-Interfaces on Switch are not getting assigned ip-addresses, even with fixed ip-address assigned to client client is not able to reach Firewall using the portchannel. Portchannel including VLAN is working properly. Here is my setup

I'm having a Fortigate FGT80E connected to GS1920-24HPv2 using a LACP-Portchannel. The Portchannel contains 4 VLANs (IDs 10,2,199,222) it terminates on GS1920 on Ports 23 & 24. Default-GW & DHCP-Server is for each VLAN the firewall. I have created the corresponding VLANs on GS1920 and assigned the PVID to the ports i want to use - VLAN1 has been forbiden on these ports - including the trunk-ports. LACP-Ports are set to trunking, VLAN1 has been forbidden on assigned LACP-Ports. I guess there is something i'm missing or i have overseen. Any help is very much appreciated.

Many thanks to all.

LACP-Status

VLANs

My Client is connected to port3 (VLAN10) - for testing i have disabled other VLAN except VLAN1.

VLAN-Port-Setup - for VLAN10

VLAN on Fortigate