Web UI is not accessible for a digi device AnywhereUSB 5M

AnywhereUSB utility works fine on my Windows 2008 R2 server. I can use it to configure IP and connect to the digi device. However, I was not able to open Web UI from the utility, or browse the page in IE 8/9 using the device IP. I hope I can configure the port group in Web UI to utilize the multi host connection.

The device firmware is V.138.1013.

anyone can help? thanks,

reset to factory default and update the firmware