There is a work around for the channel change I came up with on my android. While viewing the current, open the remote and you will have 3 choices (on left, an icon that represents a joystick, in center the keypad and on the right, "MISC". Open the remote, choose the keypad and select the channel #s you want and hit enter. The remote will disappear. Reopen the remote, choose the joystick and hit OK [bottom left]. Wait a few seconds and the channel will change.
My sling box is in another state. I can get into it on both my android phone and iMac but cannot change channels. I only have the Verizon menu guide channel with a small box that is displaying the actual channel being played. I cannot channel up/down, use remote app, hit enter etc to change the channel. Worked about a month ago when I last used it. I changed no settings. the box has not changed settings.