I've been trying to make a port profile in omada software controller that has no native network - eg all traffic must be tagged, like this:

At the red arrows, I am unable to remove LAN(1) in order to add it to the list of tagged networks. Is there a reason for this?

In OpenWRT on the router, I can tag/untag however I like:

Reason I ask is because I was struggling for hours unable to connect to wifi SSID "ASIO" (dhcp replies not received) until I REMOVED the VLAN ID from the port which forces that SSID onto VLAN 1 because its now untagged. See no VLAN at red arrow below - removing this made all my SSIDs working.

Before I fixed things, both other SSIDs worked the whole time and having VLAN 1 set worked when connected to OpenWRT with all VLANs set to tagged.

Everything is working now but any VLAN/UI experts know whats going on here? From my research on VLAN trunking ("All" in Omada) its an adminstrative construct that lets selects all existing/future VLANs as tagged with one VLAN (usually 1) as untagged and default. Is "fully tagged" not allowed?

I did also try adding an extra VLAN: 10 just for the WIFI SSID and leave VLAN 1 untagged but this meant I would have to somehow bridge VLAN 10 and VLAN 1. Tried this in OpenWRT but brought down the whole network and had to revert.