Your other option, look on your Router for the connected devices on your NW. the ip address will be around this. 192.168.*.*
on your Laptop or Desktop - open a command Prompt. Start, Run, type in CMD, Black screen appears, typein: ipconfig/all
You can then see your IP Address of your machine, open a internet browser and type in the ip addy and just keep changing the last digits
got eg: 192.168.0.2 is your computer. keep going up, 192.168.0.2 etc etc
It will then open the Gui on the box.
Another method, get an IP Scanner s/ware, install and then scan your NW for the box, connect via web browser, and then you will see the option for the remote and can manage the box via that.
There are other methods, but my fingers hurt for a Friday typing this lol
Or, get a remote for £3.50 on the link above