WebGUI not accessable through VLANs

[chiliheld]

Hello,
I'm struggling with this now already several days (my first install).
I can't access the WebUI through a VLAN even though I have allowed System\Settings\Administration (both LAN and VLAN10).
LAN can access the WebUI but VLAN10 can't.
Already started from factory default without any firewall rules but still same result.

Both LAN and VLAN10 have DHCP.
LAN is 192.168.5.1
VLAN is 192.168.1.1

What am I doing wrong or missing?

Many thanks for any hint

[cookiemonster]

that could be the managed switch. It needs to allow the VLAN to accept traffic on the access port that is used to carry those packets.