Topology is not clear to me but it seems you’re having issues within the Tag-Based VLAN’s.
Are you being able to ping other devices that is connected to RUT360?
Please also confirm if firewall settings are all ok for the connected devices and also for the router.
In VLAN interfaces settings, under Physical Settings assign corresponding physical interface to VLAN11. Please also make sure DHCP server is enabled for the interface.
You can find detailed instructions from this link.