@kidhexa yes there is something with your VLAN settings, but VLAN is VLAN, tagged vlan 10 should talk to tagged vlan 10 regardless of brand, so you have to check your vlan settings, the tag must...

@kidhexa What are you using as a management VLAN?

@kidhexa The Omada setup looks correct, so if all VLANs are tagged out from the Fortigate router then it should work. But why are you using DHCP relay? It's not necessary, is it? Is VLAN1 untagged...

@kidhexa I understand, but there is no screenshot, I was also wondering what the old access points are called. If the access point gets an IP address, VLAN1 should work. You almost have to explain a...

@kidhexa What type are the existing access points, and how have you configured the vlan on the access points? some screenshots would help. Is there a problem with all the VLANs

@graps If you haven't created any ACL blocks, then there is nothing blocking, but the mistake many people do is not checking the Windows firewall, it blocks all remote networks by default, turn off...