Please search the forum, as this has been discussed many times, and is posted at the bottom of Open Black Hole 4.4, you need to set a password, on your receiver.
To set it go into the menu, Setup, Network, Password.
Alternatively you can do it from your PC, using PuTTY, start up PuTTY, enter your receivers IP Address, select Telnet, and Open. Now type in root, and enter, next type passwd, and enter, then at the password screen enter the old password, or leave it blank, if no password was set, and type in your new password, and confirm the password. Even though it looks like nothing is being typed, it is, it just doesn't show it.
