As you know, we cannot access the https://unleashed.ruckuswireless.com/ link if you are not connected to the RUCKUS Access Point’s Wi-Fi network. And you mentioned you are connected to the RUCKUS Wi-Fi/Internet network.
If you are still unable to access it, please try to access using the IP Address of the Master Access Point. If you don’t know the IP Address of the Master Access Point. Please refer to the below guide to find the IP Address of the Access Points.
How to find my Ruckus “Devices IP address” using free applications: